KR102476331B1 - A method for unused materials trading service that recommends the best transport company - Google Patents

Abstract

The present invention provides information on the searched for unused materials to a terminal device of a first purchaser; and identifying an optimum transport company from among at least one transport company based on destination information input by the first purchaser and location information where the selected unused material is located. it's about...

Description

{A method for unused materials trading service that recommends the best transport company}

The present invention relates to a method for providing a disused material trading service for recommending an optimal transport company.

Many companies purchase raw materials in bulk to lower the unit cost and mass-produce equipment for plant construction to lower the unit cost of production. When inventory is created due to bulk purchases and production, many companies often try to minimize losses by selling obsolete inventory to other companies.

However, the reality is that unused inventory is not smoothly traded on the existing limited offline trading network. As a result, many sellers are not improving their performance even with competitive manufacturing technology.

In addition, in the past, buyers who wish to purchase materials for plant construction have limitations in that they cannot efficiently collect information on materials that meet the required specifications and more efficiently plan material purchases based on the collected information.

Republic of Korea Patent Publication No. 10-2001-0016360

The present disclosure has been made to solve the above problems, and an object of the present disclosure is to provide a service providing method of a server that provides a service capable of efficiently searching for and trading unused materials.

The present disclosure has been made to solve the above problems, and an object of the present disclosure is to provide a service providing method of a server that provides a service capable of efficiently searching for and trading pipe materials.

According to an embodiment of the present disclosure, a service providing method of a server that provides a search and transaction service for unused materials includes the steps of receiving data on at least one type of unused materials from a terminal device of at least one seller, the input data classifying them according to the type, state, and characteristics of the material, and constructing a database for disused materials based on the classified data, receiving information on the material to be purchased from a terminal device of a first purchaser, Searching for a material that the first buyer wants to purchase based on a matching rate between the information on the input material and the information on the material included in the constructed database; providing a purchaser's terminal device, and if one of the searched materials is selected by the first purchaser's terminal device, providing a quote for the selected material to the first purchaser's terminal device. .

The state of the material includes at least one of a scratch degree, a rust degree, a dent degree, and a country of the material, and the characteristics of the material include welding, welding type ), material grade, pressure rating, and size.

In the step of matching predefined weights to a plurality of categories included in each of the states and characteristics of the material, and the constructing step, the value indicating the state and characteristics of the disused material input from the terminal device of the at least one seller and the above The method may include calculating a predefined weight to obtain a grade of the input disused material, and constructing the database based on the obtained grade of the disused material.

The searching may include obtaining a matching rate between the information on the material to be purchased and the material included in the constructed database, and selecting a material having a matching rate equal to or greater than a predetermined value among the obtained matching rates. 1 It may include a step of searching for the material requested by the buyer.

The service providing method may further include configuring a cache through Redis for information about materials that are searched for more than a predetermined number of times among materials included in the database.

The service providing method includes obtaining a purchase pattern of the first purchaser by analyzing information on materials purchased by the terminal device of the first purchaser, and purchasing patterns of the first purchaser among a plurality of materials included in the database. The method may include identifying at least one recommended material matching with and providing information on the identified recommended material to the terminal device of the first purchaser.

The providing of the quotation may include at least one of cost and time required for transporting the selected material from among at least one carrier based on destination information input by the first buyer and location information of the selected material. calculating, identifying an optimal transport company from among the at least one transport company using at least one of the calculated cost and time, and sending an estimate including the transport cost and transport time of the identified transport company. and providing the information to the terminal device of the first purchaser.

The service providing method includes receiving preference information for transportation from the terminal device of the first purchaser and identifying the optimal transportation company from among the at least one transportation company based on the input preference information for transportation. Further, the preference information for transportation may include information about factors that the first purchaser determines to be important among cost or time required for transportation of materials.

The service providing method may further include transmitting transaction information on the selected material to a terminal device of a seller of the selected material when the cost corresponding to the quote is paid by the first buyer.

The information on the material to be purchased input from the terminal device of the first purchaser is a file including at least one of a list, quantity, and state of the material the first buyer wants to purchase, and The step of receiving information on the material to be purchased may include identifying the material that the first purchaser wants to purchase by detecting a keyword indicating at least one of the type, characteristic, and state of the material included in the file. have.

According to an embodiment of the present disclosure, a service providing method of a server providing a pipe material search and transaction service includes receiving data on at least one type of pipe material from a terminal device of at least one seller, the input data classifying according to the type, state and characteristics of the material, and constructing a database for the piping material based on the classified data, receiving information on the material to be purchased from the terminal device of the first purchaser, Searching for a material that the first buyer wants to purchase based on a matching rate between the information on the input material and the information on the material included in the constructed database; providing a purchaser's terminal device, and if one of the searched materials is selected by the first purchaser's terminal device, providing a quote for the selected material to the first purchaser's terminal device. .

The state of the material includes at least one of a scratch degree, a rust degree, a dent degree, and a country of the material, and the characteristics of the material include welding, welding type ), material grade, pressure rating, and size.

In the step of matching predefined weights to a plurality of categories included in each of the states and characteristics of the material, and constructing, the numerical value representing the state and characteristics of the piping material input from the terminal device of the at least one seller and the The method may include obtaining a grade of the input piping material by calculating a predefined weight, and constructing the database based on the obtained grade of the piping material.

The searching may include obtaining a matching rate between the information on the material to be purchased and the material included in the constructed database, and selecting a material having a matching rate equal to or greater than a predetermined value among the obtained matching rates. 1 It may include a step of searching for the material requested by the buyer.

The service providing method may further include configuring a cache through Redis for information about materials that are searched for more than a predetermined number of times among materials included in the database.

The service providing method includes obtaining a purchase pattern of the first purchaser by analyzing information on materials purchased by the terminal device of the first purchaser, and purchasing patterns of the first purchaser among a plurality of materials included in the database. The method may include identifying at least one recommended material matching with and providing information on the identified recommended material to the terminal device of the first purchaser.

The providing of the quotation may include at least one of cost and time required for transporting the selected material from among at least one carrier based on destination information input by the first buyer and location information of the selected material. calculating, identifying an optimal transport company from among the at least one transport company using at least one of the calculated cost and time, and sending an estimate including the transport cost and transport time of the identified transport company. and providing the information to the terminal device of the first purchaser.

The service providing method includes receiving preference information for transportation from the terminal device of the first purchaser and identifying the optimal transportation company from among the at least one transportation company based on the input preference information for transportation. Further, the preference information for transportation may include information about factors that the first purchaser determines to be important among cost or time required for transportation of materials.

The service providing method may further include transmitting transaction information on the selected material to a terminal device of a seller of the selected material when the cost corresponding to the quote is paid by the first buyer.

The information on the material to be purchased input from the terminal device of the first purchaser is a file including at least one of a list, quantity, and state of the material the first buyer wants to purchase, and The step of receiving information on the material to be purchased may include identifying the material that the first purchaser wants to purchase by detecting a keyword indicating at least one of the type, characteristic, and state of the material included in the file. have.

According to various embodiments of the present disclosure, the server may efficiently search for and provide materials suitable for a buyer from among unused materials registered by a plurality of sellers based on information on materials requested by the buyer.

Accordingly, the buyer can save time and cost for searching for necessary materials, and the seller can secure various purchasing sources beyond the limited offline sales network.

According to various embodiments of the present disclosure, the server may efficiently search for and provide a material suitable for a buyer among piping materials registered by a plurality of sellers based on information about the material requested by the buyer.

Effects of the present disclosure are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

1 is a diagram for explaining an environment to which a system for providing material search and transaction services according to an embodiment of the present disclosure is applied;
2 is a flowchart for explaining a method for searching for materials and providing transaction services according to an embodiment of the present disclosure;
3 is a sequence diagram for explaining a process of providing a material search and transaction service according to an embodiment of the present disclosure;
4 is a flowchart for explaining a process of providing information on recommended materials to a buyer's terminal device according to an embodiment of the present disclosure;
5 is a diagram for explaining a process in which a server builds a database according to an embodiment of the present disclosure;
6a to 6c are diagrams for explaining a process in which a server provides a quotation to a buyer according to an embodiment of the present disclosure;
7 is a block diagram for explaining the configuration of a server according to an embodiment of the present disclosure.

Since the present disclosure may have various changes and various embodiments, specific embodiments are illustrated in the drawings, and will be described in detail through detailed description. However, this is not intended to limit the present disclosure to specific embodiments, and it should be understood that the present invention includes all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

In describing the present disclosure, detailed descriptions of related known technologies will be omitted if it is determined that the subject matter of the present invention may be unnecessarily obscured. In addition, numbers (eg, first, second, etc.) used in the description process of this specification are only identifiers for distinguishing one component from another component.

In addition, when one component in this specification is referred to as "connected" or "connected" to another component, the one component may be directly connected or directly connected to the other component, but in particular the opposite It should be understood that, as long as no description exists, it may be connected or connected via another component in the middle.

In addition, in the present specification, components expressed as '~ unit (unit)', 'module', etc. are two or more components combined into one component, or one component is divided into two or more components for each more subdivided function. may be differentiated into In addition, each of the components to be described below may additionally perform some or all of the functions of other components in addition to its own main function, and some of the main functions of each component may be different from other components. Of course, it may be performed exclusively by a component.

Hereinafter, the present disclosure will be described in detail with reference to the drawings.

1 is a diagram for explaining an environment to which a server 100 providing a material search and transaction service according to an embodiment of the present disclosure is applied.

As shown in FIG. 1, a system 1000 for providing material search and transaction services according to an embodiment of the present disclosure includes a seller terminal 10, a buyer terminal 20, and a material search and transaction service providing A server 100 may be included. Here, the network may include a wired network and a wireless network. For example, the network may include various networks such as a local area network (LAN), a metropolitan area network (MAN), and a wide area network (WAN).

Also, the network may include the well-known World Wide Web (WWW). However, the network according to an embodiment of the present disclosure is not limited to the networks listed above, and may include at least a part of a known wireless data network, a known telephone network, and a known wired/wireless television network.

In describing the present disclosure, the seller terminal 10 may mean a plurality of sellers who want to sell disused materials or a terminal used by a plurality of sellers. And, the purchaser terminal 20 may mean a plurality of buyers who want to purchase materials or a terminal used by a plurality of buyers.

Meanwhile, FIG. 1 illustrates a case where a terminal used by each of a plurality of sellers and buyers is a smart phone, but is not limited thereto. As another example, the terminal used by each of the plurality of sellers and buyers may be implemented as any device (eg, desktop PC, tablet PC, laptop computer, wearable device, etc.) capable of exchanging various data with the server 100. .

The server 100 may build a material database based on data on disused materials input from the seller terminal 10 through the network. Then, the server 100 receives information on the material requested by the purchaser terminal 20 through the network, and searches for a material matching the material requested by the purchaser terminal 20 from among the built databases to the purchaser terminal ( 20) can be provided.

2 is a flowchart illustrating a method of searching for materials and providing transaction services by the server 100 according to an embodiment of the present disclosure.

The server 100 may receive data on at least one type of disused material from at least one seller's terminal device (S210).

As an embodiment of the present disclosure, the server 100 may provide a seller's terminal device with a template UI through which data on obsolete materials to be sold may be input. On the template UI, the seller can input the type, condition, characteristics, and quantity of the material to be sold.

The state of the material may include, for example, at least one of a scratch level, a rust level, a dent level, and a manufacturing (or storage) country of the material. Further, the characteristics of the material may include, for example, at least one of welding, welding type, material grade, pressure rating, size, and the like.

As another embodiment of the present disclosure, the server 100 may receive a file (eg, an Excel file, etc.) including a list, quantity, status, and characteristics of materials to be sold from a seller's terminal device. . The server 100 may detect a keyword representing at least one of the type, characteristic, quantity, and state of the material on the received file. The server 100 may identify information about a material that the seller's terminal device intends to sell based on the detected keyword.

Server 100 may classify the input data according to the type, condition and characteristics of the material (S220).

For example, the server 100 detects keywords in a file including a list, quantity, condition, and characteristics of materials to be sold, and classifies each material by type, condition, and feature based on the detected keyword. can As another example, the server 100 may classify materials by type, condition, and feature based on information input on the template UI.

The server 100 may build a database for disused materials based on the classified data (S230). That is, the server 100 may build a database in which information on materials to be sold by a plurality of sellers is collected. Data on materials classified by various criteria such as seller, material type, characteristics and condition may be included in the database.

As an embodiment, the server 100 may obtain a grade of the inputted unused material by calculating a numerical value indicating the state and characteristics of the unused material input from at least one seller's terminal device and a predefined weight. Predefined weights may be matched to a plurality of categories included in each state and characteristic of the material. The server 100 may build a database based on each grade of the obtained disused material. That is, the grades of materials registered on the database may be automatically matched by predefined weights. Accordingly, buyers can identify the grade of the material they want to purchase.

The server 100 may receive information about a material to be purchased from a terminal device of a first purchaser among a plurality of purchasers (S240). Then, the server 100 may search for a material that the first purchaser wants to purchase based on the input information (S250). As an embodiment, the server 100 may display a search UI through which materials to be purchased may be searched. The terminal device of the first purchaser may search for a material to be purchased by inputting at least one of the type, characteristic, state, and quantity of the material to be purchased in the displayed search UI.

As another embodiment of the present disclosure, the information on the material to be purchased input from the terminal device of the first purchaser is a file (eg, Excel file, etc.). The server 100 may detect a keyword indicating at least one of the type, characteristic, and state of the material included in the input file to identify information about the material that the first buyer wants to purchase.

Meanwhile, the server 100 may obtain a matching rate between information on materials that the first purchaser wants to purchase and materials included in the built database. The server 100 may search for a material having a matching rate equal to or greater than a preset value among the acquired matching rates as a material requested by the first purchaser. In addition, the server 100 may configure a cache through Redis for information about materials that are searched for more than a predetermined number of times among materials included in the database.

The server 100 may provide information about the searched material to the terminal device of the first purchaser (S260). If one of the searched materials is selected by the first purchaser's terminal device, the server 100 may provide the first purchaser's terminal device with an estimate for the selected material to the first purchaser's terminal device (S270).

Meanwhile, the estimate may include at least one of transportation cost and time required to transport the selected material to the terminal device of the first old horse. Specifically, the server 100, based on the destination information input by the first purchaser and the location information on the location of the material selected by the first purchaser, costs and time required for transporting the selected material from among at least one carrier. At least one of them can be calculated.

The server 100 may use at least one of the calculated cost and time to identify an optimal transport company from among at least one transport company. For example, the server 100 may identify an optimal transport company as the calculated transport cost and transport time values are smaller. The server 100 may provide the terminal device of the first purchaser with an estimate including the transportation cost and transportation time of the identified transportation company.

Meanwhile, the server 100 may receive preference information about transport from the terminal device of the first purchaser. The preference information for transportation may include information about factors that the first purchaser determines to be important among cost or time required for transportation of materials. The server 100 may identify an optimal transport company from among at least one transport company based on the input preference information for transport.

For example, it is assumed that preference information for transportation includes information that the first purchaser determines that the cost required for transportation is more important. The server 100 may increase a weight value for transportation cost by a predetermined value in the process of identifying an optimal transportation company. That is, the server 100 may determine the transport cost as a more important factor than the transport time in the process of identifying the optimal transport company.

When the cost corresponding to the quotation is paid by the first buyer, the server 100 may transmit transaction information on the selected material to the terminal device of the seller of the purchased material. Transaction information may include the type and quantity of materials sold.

3 is a sequence diagram illustrating a process of providing a material search and transaction service according to an embodiment of the present disclosure.

The first seller (A) may transmit data on the disused material to be sold to the server 100 (S310). Here, the first seller A may mean a terminal device used by the first seller.

The server 100 may build a database of disused materials based on data input from terminal devices of a plurality of sellers including the first seller A (S320). In the database, a plurality of materials registered by the seller to be sold may be classified according to various criteria such as type, state, characteristic, and grade.

The first purchaser (B) may transmit information about the material to be purchased to the server 100 (S330). Here, the first purchaser B may refer to a terminal device used by the first purchaser.

For example, the first purchaser B may input at least one of the type, condition, quality, and grade of a material to be purchased through a search UI provided by the server 100 . As another example, the first purchaser B may transmit a file including information about a material to be purchased to the server 100 .

The server 100 may search for a material requested by the first purchaser from among a plurality of materials included in the database based on information input from the first purchaser (S340). For example, the server 100 may obtain a matching rate between information on materials that the first purchaser wants to purchase and materials included in the built database. The server 100 may search for a material having a matching rate equal to or greater than a preset value among the acquired matching rates as a material requested by the first purchaser.

The server 100 may transmit information about the searched material to the first purchaser (B) (S350). When at least one material is selected among the materials searched by the server 100, the first purchaser (B) may transmit information on the selected material to the server 100 (S360). The server 100 may generate a quote based on the material selected by the first scrap material (S370). The server 100 may transmit the generated quotation to the first purchaser (B).

The first buyer (B) may determine whether to purchase the selected material based on the received quote (S380). When the purchase of the material is confirmed, the first buyer (B) can pay the cost according to the estimate (S385). Then, the server 100 may transmit the purchase-related information to the seller (eg, the first seller) of the material purchased by the first buyer (S390).

4 is a flowchart illustrating a process of providing information on recommended materials to a buyer's terminal device according to an embodiment of the present disclosure.

The server 100 may obtain a purchase pattern of the first purchaser by analyzing information on materials purchased by the terminal device of the first purchaser (S410). For example, the server 100 may obtain information (ie, a purchase pattern) on a material preferred by the first purchaser based on the type, state, characteristics, and grade of the material purchased by the terminal device of the first purchaser. have.

As another example, the server 100 may identify a type of material or condition that the first purchaser has searched for more than a threshold number of times as the purchase pattern of the first purchaser.

The server 100 may identify at least one recommended material that matches the purchase pattern of the first purchaser among a plurality of materials included in the database (S420). For example, when a purchase pattern of the first purchaser that the first purchaser mainly purchases seamless pipes made of carbon steel is acquired, the server 100 selects carbon steel among the materials included in the database. Materials classified as steel and seamless pipes may be identified as recommended materials matching purchase patterns.

Then, the server 100 may provide information on the identified recommended material to the terminal device of the first purchaser (S430). For example, the server 100 may display information on the identified recommended material on the search UI or provide it in the form of a pop-up window.

5 is a diagram for explaining a process of a server constructing a database according to an embodiment of the present disclosure.

* A plurality of sellers may transmit information about unused materials to be sold to the server 100 . For example, the server 100 may display a UI element 510 through which information on obsolete materials to be sold may be input. The terminal device of the first seller may input a file (eg, an Excel file) including information on disused materials to be sold on the UI element 510 . The server 100 may build a database based on the input Excel file.

As another example, the server 100 may provide a file form 520 for inputting information on materials to be sold to terminal devices of a plurality of sellers. The file form 520 may be implemented as an Excel file or the like including a sheet for inputting material types, conditions, characteristics, and the like. The server 100 may build a database based on information included in the input file form 520 .

6A to 6C are diagrams for explaining a process in which a server provides a quotation to a buyer, according to an embodiment of the present disclosure.

6A is a diagram for explaining a process in which the server 100 displays a UI providing information on materials searched by a first purchaser. The first purchaser may input information on a material to be purchased into the search window 610 .

The server 100 may display information 630 on a material that the first buyer intends to purchase among materials included in the database, based on information on the material input to the search window 610 . Meanwhile, the first purchaser may more easily search for the material to be purchased by inputting the state or characteristic of the material to be purchased (620).

Meanwhile, as shown in FIG. 6B , the first purchaser may input a file including information on materials to be purchased into the purchase list input window 640 . The file input to the purchase list input window 640 may include at least one of a list, quantity, and state of materials that the first purchaser wants to purchase. The server 100 may search for a material that the first purchaser wants to purchase based on information included in the input file. The server 100 may provide information about the searched material to the first purchaser.

As shown in FIG. 6C , when at least one material is selected by the first purchaser from among the searched materials, the server 100 may generate a quote for the selected material. The quotation may include the type, condition, quantity, price, etc. of the material selected by the first purchaser. And, the estimate may include a transportation schedule 660 of the material selected by the first purchaser. Here, the transportation schedule 660 may be a transportation schedule by an optimal transportation company identified by the server 100 .

7 is a block diagram for explaining the configuration of the server 100 according to an embodiment of the present disclosure. As shown in FIG. 7 , the server 100 may include a memory 110 , a communication unit 120 and a processor 130 . However, it is not limited thereto, and the server 100 may include software and hardware configurations within a range obvious from the viewpoint of those skilled in the art according to necessary operations.

The memory 110 may store data on materials provided by a plurality of seller terminal devices and a database constructed based on the data. The memory 110 may store information on purchase histories and purchase patterns of a plurality of purchaser terminal devices.

The communication unit 120 may transmit and receive data and messages to and from seller terminals and purchaser terminals through a network.

The processor 130 may be electrically connected to the memory 110 to control overall operations and functions of the server 100 . Overall operations and functions of the server 100 described with reference to FIGS. 2 to 4 may be implemented by the processor 130 .

Meanwhile, the above-described embodiments of the present invention can be written as a program that can be executed on a computer, and the written program can be stored in a medium.

The medium may continuously store programs executable by a computer or temporarily store them for execution or download. In addition, the medium may be various recording means or storage means in the form of a single or combined hardware, but is not limited to a medium directly connected to a certain computer system, and may be distributed on a network.

Examples of the medium include magnetic media such as hard disks, floppy disks and magnetic tapes, optical recording media such as CD-ROM and DVD, magneto-optical media such as floptical disks, and ROM, RAM, flash memory, etc. configured to store program instructions. In addition, examples of other media include recording media or storage media managed by an app store that distributes applications, a site that supplies or distributes various other software, and a server.

Above, the embodiments described in the present disclosure and the accompanying drawings merely illustrate some of the technical ideas included in the present disclosure by way of example. Therefore, since the embodiments disclosed in this specification are intended to explain rather than limit the technical spirit of the present disclosure, it is obvious that the scope of the technical spirit of the present invention is not limited by these embodiments.

All modifications and specific examples that can be easily inferred by those skilled in the art within the scope of the technical idea included in the specification and drawings of the present disclosure should be construed as being included in the scope of the present disclosure.

Merchant Terminal 10
Buyer Terminal 20
server 100

Claims (10)

In a method performed by a computing device,
receiving information on at least one type of disused material from at least one seller's terminal device;
constructing a database of disused materials based on the input information on at least one type of disused materials;
Receiving information on a material that the first buyer wants to purchase from the terminal device of the first buyer as a second file - The one second file is among the quantities and states of each of the first material and the second material contains at least one - ;
Searching for an unused material that the first buyer wants to purchase based on a matching rate between the input information on the material and the information on the unused material included in the database - the matching rate is Calculated based on the result of detecting keywords included in the file and the information on the disused material included in the database -;
providing information on the searched disused materials to the terminal device of the first purchaser; and
Identifying an optimal transport company from among at least one transport company based on the destination information input by the first purchaser and location information of the disused material selected from the first purchaser;
The step of receiving information on at least one type of disused materials may include receiving information on disused materials that the first seller intends to sell as a first file from a terminal device of the first seller - the one above. The first file of includes at least one of the quantity and state of each of the first and second unused materials that the first seller intends to sell -; and
The first and second unused materials that the first seller intends to sell by detecting keywords representing types, characteristics, and states of each of the first and second unused materials included in the one first file. Including; identifying obsolete materials;
A method of providing a service, characterized in that.
According to claim 1,
Calculating at least one of cost and time required for transportation of the selected disused material by the at least one transportation company; further comprising,
The step of identifying the optimal carrier is
Using at least one of the calculated cost and time
A method of providing a service, characterized in that.
According to claim 2,
Providing information including the transportation cost of the identified transportation company to the terminal device of the first purchaser; comprising
A method of providing a service, characterized in that.
According to claim 3,
When one of the searched unused materials is selected by the terminal device of the first purchaser, providing a quote for the selected unused materials to the terminal device of the first purchaser;
In the quotation
which includes the shipping costs of the carriers identified above;
A method of providing a service, characterized in that.
According to claim 2,
Providing information including the transportation time of the identified transportation company to the terminal device of the first purchaser; comprising
A method of providing a service, characterized in that.
According to claim 5,
When one of the searched unused materials is selected by the terminal device of the first purchaser, providing a quote for the selected unused materials to the terminal device of the first purchaser;
In the quotation
which includes the transit times of the carriers identified above;
A method of providing a service, characterized in that.
The method of any one of claims 4 and 6,
Transmitting transaction information on the selected unused material to a terminal device of a seller of the selected unused material when the cost corresponding to the quotation is paid by the first buyer
A method of providing a service, characterized in that.
According to claim 1,
Further comprising receiving preference information for transportation from the terminal device of the first purchaser.
A method of providing a service, characterized in that.
According to claim 8,
In the step of identifying the optimal carrier,
Identifying the at least one carrier based on the input preference information for transportation;
Preference information for the above transportation is
Among the cost or time required for transportation of disused materials, information on factors that the first purchaser considers important is included.
A method of providing a service, characterized in that.
An unused material trading system implementing the service provision method of claim 1.

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