KR20010016360A - Method for electronic commerce of a useless parts use of computer network, its system and computer-readable medium recording the method - Google Patents

Abstract

PURPOSE: A method and a system for disused materials using computer network and a recording media thereof are provided to reduce a burden of disused materials, a burden of stock and a burden of disposal by performing an electronic commercial transaction of the disused materials on a large scale rapidly, establishing a sound order of the commercial transaction, recycling the disused materials and saving the materials. CONSTITUTION: An enterprise which performs an electronic commercial transaction of disused materials through computer network is equipped with a server computer(40). The server computer(40) is composed of a control unit and a database. A distributor computer(10) connects to the server computer(40), inputs information on the disused materials in possession and sells the materials to a purchaser who wants to buy. A purchaser computer(20) connects to the server computer(40), selects the materials noticed and requests to buy the materials. An operator computer(50) connects between the server computer and a special data connecting line or the network (30) and controls the server computer(40). The server computer(40) and the distributor computer(10), the purchaser computer(20) and the operator computer(50) connect mutually through the computer network(30). A user computer connected to the network has an internet browser which enables web contents to display as a form of a HTML, an XML.

Description

Method and electronic commerce of a useless parts use of computer network, its system and computer-readable medium recording the method}

The present invention relates to a method and system for electronic materials using a computer network, and to a computer readable recording medium recording the same. More particularly, the present invention relates to a method for manufacturing electronic materials that can be reused or not used in the field, but that can be used in other sites. The present invention relates to a method and system for useless electronic commerce and a computer readable recording medium recording the same.

The Internet consists of a huge number of computers and computer networks that interconnect these computers through communication links.

Interconnected computers exchange information using a variety of services, such as e-mail, gophers, and the World Wide Web. The world wide web allows a server computer system (eg a web server or website) to send graphical web pages of information to a remote client computer system.

Such a remote client computer system may display a web page of various screens received from a server computer.

On the other hand, with the recent development of the Internet, it is possible to purchase goods in cyber space, and in particular, since there is no burden of storing goods or inventory of sellers, e-commerce that purchasers can purchase goods at a lower price is much larger. It is being activated.

However, in general, such electronic commerce deals only with useful materials that are commercialized and can be used immediately, and electronic commerce was not carried out on the unusable materials remaining after manufacturing products or completing buildings.

In other words, such reusable materials that can be reused or not used in the field, but can be used in other sites, in particular in the case of residual steel (reinforced bar bent in various shapes) remaining after the completion of the construction work, are classified according to the form and the standard. Although it can be used at any time in construction, it is difficult for a construction contractor to secure a storage place for storing such remnants for a long time, and even if it is stored in storage until the next construction, it is often rusted or damaged to be useless. There were so many different types of residual iron that it could not be used because there is no guarantee that the residual iron can be used for the next construction.

In addition, even if the disposal of such residual iron with a limited contractor (sieve), due to the nature of the offline transaction size is small, rapid disposal is not possible, because the disposal amount is a small amount, the disposal cost was rather increased.

As a result, the neglect of unused materials such as residual iron has a problem of mass production of material waste as well as national damages, and aggravated inventory burden and disposal burden for companies.

An object of the present invention for solving the above problems is to form a form and specification of insoluble materials, to enable the posting of insoluble materials online, and to allow buyers who want to publish the posted insoluble materials to purchase promptly The present invention provides a method and system for useless electronic commerce and computer readable recording medium recording the same, which enables a large-scale electronic commerce, and establishes a sound commerce order.

In addition, another object of the present invention, a small amount of insoluble materials can be sold from the seller's point of view, a large amount of unnecessary materials can be purchased from the buyer's point of view, and the operator can create a new profit structure by providing high-value information. To provide a method and system for useless electronic commerce using a computer network and a computer-readable recording medium recording the same.

In addition, another object of the present invention is to save the material by recycling the insoluble materials, to prevent the waste of national materials, and to use the computer network to reduce the burden of unused materials, inventory and disposal burden of the company An electronic commerce method and system and a computer-readable recording medium recording the same.

1 is a conceptual diagram illustrating an insoluble material e-commerce system using a computer network according to an embodiment of the present invention.

FIG. 2 is a conceptual diagram illustrating an exchange between an operator, a seller, and a buyer who operates FIG. 1.

3 is a block diagram showing a method of using electronic computer commercial commerce using a computer network of the present invention.

4 is a flow chart according to a preferred example of FIG. 3.

FIG. 5 is a diagram illustrating an example of a screen showing a state in which the seller of FIG. 4 starts a list making program and inputs information on insoluble materials (eg, fine iron).

6 is a diagram illustrating an example of a screen for uploading a list file created by the seller of FIG. 4.

FIG. 7 is a diagram illustrating an example of a screen for checking the uploaded list file by the manager of FIG. 4.

8 is a diagram illustrating an example of a screen on which the purchaser of FIG. 4 searches for information on insoluble materials.

FIG. 9 is a diagram illustrating an example of a screen of a purchaser of FIG. 4 confirming more detailed insoluble material information.

FIG. 10 is a diagram illustrating an example of a screen of a purchaser of FIG. 4 identifying a currently available insoluble material in a status chart.

FIG. 11 is a diagram illustrating an example of a screen containing an insoluble material for a purchaser of FIG. 4 to apply for a purchase.

FIG. 12 is a diagram illustrating an example of a screen on which a purchaser of FIG. 4 makes an application for purchase of an insoluble material contained in a shopping cart.

FIG. 13 is a diagram illustrating an example of a screen for confirming details of insoluble materials requested by a purchaser of FIG. 4.

FIG. 14 is a diagram illustrating an example of a screen for confirming details of insoluble materials requested by a manager of FIG. 4.

In order to achieve the above object, an unusable material electronic commerce method using a computer network of the present invention comprises at least one seller computer, a buyer computer, and a server computer connected through a computer network, the method of trading unusable material, wherein Receives information about insoluble materials from the seller through the computer network, stores them, posts the stored information according to the buyer's choice, and enters the selected information among the posted information. To provide information about the buyer to purchase.

On the other hand, in order to achieve the above object, an unusable material electronic commerce method using the computer network of the present invention comprises at least one seller computer, a buyer computer and a server computer connected through a computer network in a method of trading insoluble materials The server computer may include a list making program for converting information about insoluble materials into a list, a data separation program for separating image data from the converted list, and converting the data into selectable information for a buyer, and a purchase application program for applying for purchase of selected insoluble materials. , A member information database that stores information about sellers and buyers, an unusable material database that stores information about incompatible materials, and a purchasing information database that stores information about purchases, which are (a) owned by the seller from the seller's computer and Fire Receiving information on the material, (b) storing the information on the insoluble material, converting the stored information into information selectable by the buyer, and (c) converting the converted information according to the buyer's selection. Providing to the buyer computer, (d) receiving input from the buyer computer from the buyer computer, the purchase application information relating to the unusable material that the buyer wants to purchase, and (e) the seller's computer of the seller possessing the unusable material that the buyer wants to purchase. It characterized in that it comprises a step of providing information about the purchase application of the buyer.

The server computer may include an electronic payment program for monitoring the payment, a deposit information database for storing the payment information, and (f) a deposit amount for the payment of the purchaser. Preferably, the method further includes providing information about the data to the seller computer.

In addition, the server computer includes a reliability evaluation program for evaluating the reliability of a member of the transaction result and a reliability information database for storing the reliability information so as to induce sound commerce, and (g) from the seller computer and / or the buyer computer to close the transaction. It is possible to further comprise the step of receiving the information about the member's trust.

On the other hand, in order to achieve the above object, an insoluble material electronic commerce system using the computer network of the present invention, at least one seller computer, a buyer computer and a server computer connected through a computer network in the system for trading insoluble materials The server computer may include a list making program for converting information about insoluble materials into a list, a data separation program for separating image data from the converted list, and converting the data into selectable information for a buyer, and a purchase application program for applying for purchase of selected insoluble materials. , A member information database that stores information about sellers and buyers, an unusable material database that stores information about incompatible materials, and a purchase information database that stores information about purchases, which are owned by the seller from the seller's computer. Receive information about the raw materials, store the information about the insoluble materials, convert the stored information into information that can be selected by the buyer, provide the information converted by the buyer's choice to the buyer computer, the buyer computer A control unit programmed to receive from the purchase application information about the insoluble material that the buyer wants to purchase from, and to provide information on the purchase application of the buyer to the seller's computer of the seller who owns the insoluble material which he wants to purchase. It is characterized by.

On the other hand, the computer-readable recording medium recording the insoluble material e-commerce method using the computer network of the present invention for achieving the above object comprises at least one vendor computer, a buyer computer and a server computer connected via a computer network A computer readable recording medium recording a method of trading insoluble materials, wherein the server computer is a list making program for converting information about insoluble materials into a list, and the buyer can select image data from the converted list. A data separation program that converts information into information, a purchase application program to purchase selected inactive materials, a member information database to store information about sellers and buyers, an insoluble materials database to store information about insoluble materials, and information about purchases Phrase (A) receiving information about the insoluble materials owned by the seller from the seller computer; (b) storing the information on the insoluble materials, and storing the stored information as information selectable by the buyer; (C) providing the converted information to the buyer's computer according to the buyer's choice; and (d) receiving purchase application information regarding the insoluble materials that the buyer wants to purchase from the buyer's computer. And (e) providing information on the purchase application of the purchaser to the seller's computer of the seller who owns the insoluble material which he / she wishes to purchase.

Hereinafter, a method and a system for useless electronic commerce using a computer network according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

First, as shown in FIG. 1, an unusable electronic commerce system using a computer network according to an exemplary embodiment of the present invention includes a seller computer 10, a buyer computer 20, and a computer network 30. And a server computer 40.

In this case, the server computer 40 is a computer provided in a company that performs electronic commerce of unusable materials using the computer network of the present invention. The server computer 40 includes a controller and a database.

In addition, the seller computer 10 is a computer of a person who connects to the server computer 40 to input information on the insoluble materials owned and sells the inexpensive materials to a desired buyer.

In addition, the purchaser computer 20 is a computer of a person who accesses the server computer 40, selects the posted unused material, and applies for a purchase.

In addition, the server computer 40 may further include an administrator computer connected to a separate data connection line or network 30 to manage the server computer 40.

The server computer 40, the seller computer 10, the purchaser computer 20, and the manager computer 50 are connected to each other via the computer network 30. User computers connected to the network 30 have an Internet browser (Netscape, Internet Explorer, etc.) capable of displaying web content in the form of HTML, XML, and the like.

On the other hand, the server computer is provided with a control unit and a database necessary for performing the electronic commerce of the insoluble material according to the present invention, the control unit is composed of a program, such a control unit is a main program 41 for operating the entire program In addition, a list creation program 42 for converting information about insoluble materials into a list, a data separation program 43 for separating image data from the converted list and converting it into information selectable by the buyer, and applying for purchase of selected insoluble materials Purchase application program 44, search program 45 to search for data that meets the conditions in the stored data, detailed information providing program 46 for providing detailed information of the information on the insoluble materials selected by the buyer, by shape of the insoluble materials Status of unusable materials that can be purchased by buyers Status providing program in the form of chart (47), purchase confirmation program (48) to check the unusable material selected by the buyer or seller, electronic payment program (49) to monitor the payment, reliability to evaluate the reliability of the transaction result member Evaluation program 50.

In addition, the database includes an insoluble materials database 51 for storing information on insoluble materials, a purchasing information database 52 for storing information on purchasing, a detailed information database 53 for storing detailed information, A deposit information database 54 for storing payment information, a reliability information database 55 for storing reliability information, and a member information database 56 for storing information on sellers and buyers.

As a result, the server computer 40 is provided with a control unit and a database, and is implemented in the form of a website on the World Wide Web (WWW) on a network such as the Internet.

Therefore, the seller who accesses the server computer 40 through the seller computer 10 is authenticated as a member who is previously set up in the member information database 56 for sound commerce and the safety of the transaction. At 42 and at the same time, the input of the insoluble materials is stored in the insoluble materials database 51, and the inputted insoluble materials information is separated by the data separation program 43 to convert the information that the buyer can select.

Here, the information on the insoluble materials, as shown in Figure 5, information about the seller, the information on the type of insoluble materials held, information on the desired sales method, information on the date of delivery, sales place Includes information on the shape of the insoluble material, information on the shape defining the appearance of the insoluble material, information on various specifications such as thickness and length of the insoluble material, information on the quantity sold, information on the unit price of the insoluble material, and other details on the insoluble material. can do.

In addition, a purchaser who accesses the server computer 40 through the purchaser computer 20 may be authenticated as a member set in advance in the member information database 56, and the search program 45 or the present condition providing program. According to (47) it is possible to search for information on the insoluble materials stored in the insoluble materials database 51, the retrieved information and the detailed information stored in the detailed information database 53 by the detailed information providing program 46 and It may be provided together, it is possible to apply for a purchase by the purchase application program 44 at the buyer's choice.

The purchase information is stored and managed in the purchase information database 52, and when the buyer or seller finally confirms the fact that the purchase request is made by the purchase confirmation program 48, the payment is made by the electronic payment program 49. As confirmed, it is notified to the seller computer 10 so that the seller can trade the unusable material with the buyer at the place of sale or at the desired place.

The deposit information is stored in the deposit information database 54, calculates the reliability for each seller or buyer according to the actual transaction performance based on the information provided by the seller or buyer by the reliability evaluation program 50, and posted it To induce sound commerce.

On the other hand, the manager manages all of these items by the manager computer 50, and the information which the buyer can select by the data separation program 43 of the insoluble material information which the seller inputs by the said list making program 42. It can also be processed manually by imaging.

Here, the information selectable by the purchaser is, as shown in Fig. 8, information on the product number, information on the shape number, information on the specification of the insoluble materials, information on the requested quantity, information on the remaining quantity, request It may include information about the date and information about the price.

Further, as shown in FIG. 9, more detailed information that can be selected by the purchaser includes a shape number, reinforcing bar information, request date, address, telephone number, request range, unit price, request amount, purchase amount, remaining amount, image information, and the like. Include.

Here, the information on the insoluble material to be input and selected may be any information that can be specifically shaped, standardized and standardized in the insoluble material, and examples of such input information may vary.

Therefore, as shown in Figure 2, according to the insoluble material e-commerce system using the computer network of the present invention, the operator (employer or manager), the opportunity to quickly sell a small amount of unusable material to the seller And provide buyers with high value-added sales information that enables them to purchase large quantities of unwanted materials at a cheaper price.

In addition, the seller can pass the unusable material to the buyer to the desired condition, receive the payment very easily, can deal with a reliable buyer, and increase the reliability of the unusable material more quickly and conveniently. will be.

Therefore, the operator can be provided with information on the fees and sales for using the unusable electronic commerce system using the computer network of the present invention from the seller, and can receive a fee for the service from the buyer. The profit structure will be created.

On the other hand, when the inactive materials electronic commerce method using the computer network of the present invention is sequentially shown, the insoluble materials electronic commerce method using the computer network of the present invention, receives the information about the insoluble materials from the seller through the computer network and stores them And posting the stored information according to the buyer's selection, and when the buyer inputs the selected selection information from the posted information, the seller provides the information on the buyer to purchase to the seller who holds the selected insoluble material. In detail, as shown in FIG. 3, first, a server computer that can trade insoluble materials through a computer network is configured, and (a) a seller computer receives information regarding insoluble materials owned by the seller. (B) storing information about the insoluble material, Converting the stored information into information selectable by the buyer, (c) providing the converted computer to the buyer computer at the buyer's choice, and (d) any unusable material that the buyer wants to purchase from the buyer computer. And (e) providing information about the purchase application of the purchaser to the seller's computer of the seller who owns the infringable material desired to purchase.

And (f) providing information to the seller computer and / or the buyer computer on which the purchaser's payment has been deposited, and (g) providing information about the transaction completion from the seller computer and / or the buyer computer. The method may further include posting the information on the trust of the member.

Here, the step (a) may include the step of receiving the list creation program to the seller computer and the step of receiving list information created by the seller in the list creation program in the form of a file.

In other words, it is also possible for a seller to directly enter information on insoluble materials into the server computer, and since it is difficult for most sellers or buyers to work 24 hours on an Internet line, the seller may use a list making program from the server computer. It is also possible to use the method of downloading and inputting insoluble material information according to the list making program independent from the seller computer, storing it in the form of a file in the seller computer, and then transferring only the stored file to the server computer.

In addition, if there is a computerized environment in the seller company as an alternative method of inputting and management of insoluble materials, it is possible to input information on insoluble materials from server to server using a technology such as XML.

In addition, the step (b) includes the step of separating the image information for the insoluble material by shape so that the buyer can confirm the shape of the insoluble material by the image, and storing the classified image to correspond to each insoluble material do.

In other words, these images of insoluble materials are already classified and formalized to allow transactions to be made within a defined range. In other words, the user is not familiar with the computing environment to facilitate the search and input of insoluble materials quickly and easily, the continuous addition of the classification can be made based on the shape that is applied a lot in the mold.

In addition, the step (c) includes receiving information about a search word from a buyer computer, searching for information corresponding to the search word, and providing detailed information of the searched information to the buyer computer according to a buyer's selection. In addition, as shown in FIG. 10, in the case of fine iron, the horizontal axis represents a diameter, and the vertical axis represents a shape number, thereby showing a status chart that simply shows the type and amount of insoluble materials currently available for purchase by a checkerboard. It is also possible to provide.

That is, in the step (c), the buyer selects the insoluble materials indicated in the chart and checks the detailed information, and shows the present situation chart of the types and amount of insoluble materials that the buyer can purchase according to the shape and size of the insoluble materials. It can be provided to a computer.

In addition, the step (d) may allow the buyer to confirm the list of insoluble materials and the total cost and the total quantity before the purchase application to be purchased.

As shown in FIG. 11, a shopping cart program is widely used, and a wide variety of programs may be used.

Meanwhile, an example in which the steps (a), (b), (c), (d), and (e) are more specifically illustrated is shown in a flowchart in FIG. 4.

That is, as shown in Fig. 4, when the user connects to the server computer (S1), the user confirms whether the accessor is a member (S2), and if the member is not a member, a member who can charge a fee or fee, such as a seller or a buyer. To register (S3).

Subsequently, when the user account is authenticated by checking the member account (S4), it is determined whether the authenticated user is the seller (S5), the purchaser (S6), or the administrator (S7). If (S5), first, if you want to download the list program from the server computer (S8) to transfer (download) the list program to the seller computer (S9).

Subsequently, as shown in FIG. 5, the seller runs a list program embedded in or downloaded from the server computer (S10), inputs information on insoluble materials possessed by the seller (S11), and generates a list file. (S12) In the case of using the downloaded list program, when the created list file (for example, " bar " bar " in the drawing) is to be transferred (S13), as shown in FIG. It is also possible to upload / transfer to the server computer (S15) or continue (S14) by inputting other unavailable material information to create a plurality of list files and upload the file.

On the other hand, if the user is a buyer who wants to buy the unusable material (S6), if the buyer wants to search the inputted unused material information (S16), as shown in Figure 8, the search conditions (for example, the shape number in the figure And the search term in the search box (S17), the search results that match the search conditions are sent to the buyer computer to confirm (S18).

At this time, if the buyer wants more detailed information, clicking the list displays detailed information or image information as shown in FIG. 9.

In addition, if the buyer wants to check the current status of the insoluble materials available for purchase (S19), the status chart (S20).

In this case, as shown in FIG. 10, when a specific list (for example, HD300 in the drawing indicates HD: type, 300: holding amount) is clicked, the detailed information or image information is displayed to determine the buyer's judgment. Help

Subsequently, when a desired insoluble material is selected by clicking specific insoluble material information in the searched search result or the present situation chart (S21), as shown in FIG. 11, the selected insoluble material is displayed using a shopping cart program (S22). When the selected insoluble materials are confirmed (S23), as shown in FIG. 12, it is asked whether or not to purchase (S24) to request the purchase of desired insoluble materials (S25), and as shown in FIG. Detailed information of the insoluble materials can be confirmed (S26).

Subsequently, it is possible to continue to search for other unusable material information or to check or select the current state (S27).

On the other hand, if the user is an administrator (S7), as shown in Figure 7, check the list file uploaded from the seller computer (S28), and converts it into information that the buyer can select (S29), the converted information After storing (S30), the converted information is posted, that is, transmitted to the buyer computer (S31) so that the buyer can search the seller's unused materials, check the current status, select, and apply for a purchase.

In addition, when the seller and / or the buyer enters the information about the actual closing of the transaction through this to confirm the closing of the transaction (S32) it is possible to post the reliability of the members.

At this time, as shown in Figure 14, the administrator can check the details of each purchase through the purchase list, it is possible to make it possible to confirm in the processing state.

Subsequently, it is possible for the administrator to check the uploaded list file of another seller (S33).

Therefore, it is possible for sellers, buyers, and managers to access a single homepage and perform consistent tasks. All of these processes are provided in real time, reducing the processing time of unused materials, even though the seller has a small amount of unused materials. Even so, buyers can purchase large quantities of similar materials and specifications that many sellers possess at once.

On the other hand, the present invention can also be embodied as computer readable codes on a computer readable recording medium.

The computer-readable recording medium includes all kinds of recording devices in which data that can be read by a computer system is stored.

Examples of computer-readable recording media include ROMs, RAMs, CD-ROMs, magnetic tapes, floppy disks, optical data storage devices, and the like, which are also implemented in the form of carrier waves (for example, transmission over the Internet). Include.

The computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.

The present invention is not limited to the above-described embodiments, and of course, modifications may be made by those skilled in the art without departing from the spirit of the present invention.

For example, in the embodiment of the present invention is described in particular limited to the building materials, in particular, the residual iron of various kinds of insoluble materials, in addition to all the product items such as various mechanical parts, interior materials, tools are possible, and the parts are classified in various ways Type classification method and standard classification method can be applied.

Therefore, the scope of the claims in the present invention will not be defined within the scope of the detailed description, but will be defined by the following claims and the technical spirit thereof.

As described above, the method and system for the useless electronic commerce using the computer network of the present invention and the computer-readable recording medium recording the same enable the rapid and large-scale electronic commerce of the unusable material and establish a sound commerce order. It is possible to sell a small amount of unusable material, to purchase a large amount of unusable material, and to save material by recycling the unusable material, to prevent the waste of national materials, the burden of the unused material of the company, the burden of inventory and It will have the effect of reducing the burden of disposal.

Claims (13)

A method of trading insoluble materials, comprising at least one merchant computer, a buyer computer and a server computer connected via a computer network, the method comprising: Receive and store information on insoluble materials from the seller through the computer network, post the stored information according to the buyer's choice, and when the buyer enters selected information from the posted information, the buyer holds the selected insoluble materials. An e-commerce method using an unusable material using a computer network, characterized by providing a seller with information about a buyer to purchase. A method of trading insoluble materials, comprising at least one merchant computer, a buyer computer and a server computer connected via a computer network, the method comprising: The server computer may include a list making program for converting information about insoluble materials into a list, a data separation program for separating image data from the converted list and converting the information into selectable information for a buyer, a purchase application program for applying for purchase of selected insoluble materials, It includes a member information database that stores information about sellers and buyers, an unusable material database that stores information about insoluble materials, and a purchasing information database that stores information about purchases. (a) receiving information about an insoluble material owned by the seller from the seller computer; (b) storing the information on the insoluble materials and converting the stored information into information selectable by the purchaser; (c) providing the buyer computer with the converted information at the buyer's choice; (d) receiving purchase application information on insoluble materials that the buyer wants to purchase from the buyer computer; And (e) providing information about the purchaser's subscription to the seller's computer of the seller who owns the infringing material he / she wishes to purchase; Unavailable electronic commerce method using a computer network, characterized in that comprises a. The method of claim 2, wherein the information about the insoluble material is At least information about the seller, information about the types of infringing materials held, information on the desired method of sale, information on the date of delivery, information on the place of sale, information on the shape defining the appearance of insoluble materials, Insoluble materials using a computer network comprising one or more of information on various specifications such as thickness and length of the material, information on sales quantity, information on sales unit price, and detailed information on other unusable materials Commerce method. The method of claim 2, wherein the buyer selectable information, At least one of information on product number, information on shape number, information on specification of insoluble materials, information on request quantity, information on remaining quantity, information on request date, price information An unusable material electronic commerce method using a computer network, characterized in that made. The method of claim 2, Step (a) may include receiving the list making program to the seller computer; And Receiving list information created by the seller by a list making program in the form of a file; Unavailable electronic commerce method using a computer network, characterized in that comprises a. The method of claim 2, The step (b) comprises the step of separating the image of the insoluble material by shape so as to identify the shape of the insoluble material by the buyer image, and storing the classified image to correspond to each insoluble material An unusable material e-commerce method using a computer network, characterized in that. The method of claim 2, The server computer includes a search program for retrieving data that meets a condition from the stored data, a detailed information providing program for providing detailed information of information on insoluble materials selected by a buyer, and a detailed information database for storing detailed information. Step (c) may include receiving information on a search word from a buyer computer and searching for information corresponding to the search word; And Providing detailed information of the retrieved information to the buyer computer according to the buyer's selection; Unavailable electronic commerce method using a computer network, characterized in that comprises a. The method of claim 2, The server computer includes a status providing program that displays the status of the types and amount of insoluble materials that can be purchased by the buyer by the shape and specification of the insoluble materials in a tabular form. In the step (c), the buyer can select the insoluble materials indicated in the chart and check the detailed information on the purchaser's computer according to the shape and size of the insoluble materials. An unusable material e-commerce method using a computer network, characterized in that provided. The method of claim 2, The server computer includes a purchase confirmation program that confirms the unusable material selected by the buyer or seller, Wherein step (d), before the purchase application, the electronic materials commercial transaction method using the computer network comprising the step of finally confirming the list of the unusable materials that the buyer wants to purchase, the total cost and the total quantity. The method of claim 2, The server computer includes an electronic payment program that monitors whether the payment is received, a payment information database that stores the payment information, and (f) providing the seller computer and / or the purchaser computer with information about the deposited payment to which the purchaser's purchase price is deposited. The method of claim 2, The server computer includes a reliability evaluation program for evaluating a member's reliability and a reliability information database for storing reliability information. and (g) receiving the information on the closing of the transaction from the seller computer and / or the buyer computer and posting the trustworthiness of the member. A system for trading insoluble materials, comprising at least one merchant computer, a buyer computer and a server computer connected via a computer network, The server computer may include a list making program for converting information about insoluble materials into a list, a data separation program for separating image data from the converted list and converting the information into selectable information for a buyer, a purchase application program for applying for purchase of selected insoluble materials, It includes a member information database that stores information about sellers and buyers, an unusable material database that stores information about insoluble materials, and a purchasing information database that stores information about purchases. Receive information on the insoluble materials owned by the seller from the seller computer, store the information on the insoluble materials, convert the stored information into information selectable by the buyer, and convert the converted information according to the buyer's selection Provide to the computer, receive from the purchaser's computer the purchase application information regarding the insoluble material that the buyer wants to purchase, and provide information about the purchase application of the buyer to the seller's computer of the seller who owns the insoluble material that he wants to buy; An unnecessary materials electronic commerce system using a computer network, characterized in that it comprises a control unit programmed to. A computer readable recording medium having at least one seller computer, a buyer computer and a server computer connected via a computer network, the method of trading insoluble materials, comprising: The server computer may include a list making program for converting information about insoluble materials into a list, a data separation program for separating image data from the converted list and converting the information into selectable information for a buyer, a purchase application program for applying for purchase of selected insoluble materials, It includes a member information database that stores information about sellers and buyers, an unusable material database that stores information about insoluble materials, and a purchasing information database that stores information about purchases. (a) receiving information about an insoluble material owned by the seller from the seller computer; (b) storing the information on the insoluble materials and converting the stored information into information selectable by the purchaser; (c) providing the buyer computer with the converted information at the buyer's choice; (d) receiving purchase application information on insoluble materials that the buyer wants to purchase from the buyer computer; And (e) providing information about the purchaser's subscription to the seller's computer of the seller who owns the infringing material he / she wishes to purchase; A computer-readable recording medium recording a method of e-commerce using an unusable material using a computer network, comprising: a.