CN113222696A - Integrated management method of industrial waste transaction platform - Google Patents

Integrated management method of industrial waste transaction platform Download PDF

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Publication number
CN113222696A
CN113222696A CN202110507146.5A CN202110507146A CN113222696A CN 113222696 A CN113222696 A CN 113222696A CN 202110507146 A CN202110507146 A CN 202110507146A CN 113222696 A CN113222696 A CN 113222696A
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module
transaction
industrial waste
information
platform
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Chinese (zh)
Inventor
刘智良
王真
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Guangdong City Environmental Protection Co ltd
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Guangdong City Environmental Protection Co ltd
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Priority to CN202110507146.5A priority Critical patent/CN113222696A/en
Publication of CN113222696A publication Critical patent/CN113222696A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q30/00—Commerce
    • G06Q30/06—Buying, selling or leasing transactions
    • G06Q30/0601—Electronic shopping [e-shopping]
    • G06Q30/0633—Lists, e.g. purchase orders, compilation or processing
    • G06Q30/0635—Processing of requisition or of purchase orders
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F5/00—Show stands, hangers, or shelves characterised by their constructional features
    • A47F5/02—Rotary display stands
    • A47F5/025—Rotary display stands having mechanical drive, e.g. turntables
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F7/00—Show stands, hangers, or shelves, adapted for particular articles or materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G17/00—Apparatus for or methods of weighing material of special form or property
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31—User authentication
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/08—Payment architectures
    • G06Q20/10—Payment architectures specially adapted for electronic funds transfer [EFT] systems; specially adapted for home banking systems
    • G06Q20/102—Bill distribution or payments
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q30/00—Commerce
    • G06Q30/02—Marketing; Price estimation or determination; Fundraising
    • G06Q30/0278—Product appraisal
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q30/00—Commerce
    • G06Q30/06—Buying, selling or leasing transactions
    • G06Q30/0601—Electronic shopping [e-shopping]
    • G06Q30/0623—Item investigation
    • G06Q30/0625—Directed, with specific intent or strategy
    • G06Q30/0627—Directed, with specific intent or strategy using item specifications
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q30/00—Commerce
    • G06Q30/06—Buying, selling or leasing transactions
    • G06Q30/0601—Electronic shopping [e-shopping]
    • G06Q30/0641—Shopping interfaces
    • G06Q30/0643—Graphical representation of items or shoppers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V20/00—Scenes; Scene-specific elements

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  • Business, Economics & Management (AREA)
  • Engineering & Computer Science (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Development Economics (AREA)
  • Strategic Management (AREA)
  • Economics (AREA)
  • General Business, Economics & Management (AREA)
  • Marketing (AREA)
  • Computer Security & Cryptography (AREA)
  • Game Theory and Decision Science (AREA)
  • Entrepreneurship & Innovation (AREA)
  • Multimedia (AREA)
  • Computer Hardware Design (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Solid Wastes (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)

Abstract

The invention discloses an integrated management method of an industrial waste transaction platform, which comprises the following steps: s1: a storage and organization unit: the basic information of the type, unit price and quantity of the industrial waste can be sorted through the sorting module, and the information can be stored through the storage module; s2: a login module: the client submits the authentication information, the identity is verified through the identity verification module, and a trading platform can be carried out after the identity is verified; s3: a selection unit: the selection unit comprises a sale transaction module and a purchase transaction module, and the selection is to sell or purchase according to the requirement of a customer; s4: a purchase unit: the selection is made based on the type of the substrate information in S1, and the type is selected. The method is convenient for the customers who need to sell the industrial waste and the customers who buy the industrial waste to buy, thereby integrating selling and buying and being convenient for people to use.

Description

Integrated management method of industrial waste transaction platform
Technical Field
The invention relates to the technical field of multimedia display, in particular to an integrated management method of an industrial waste transaction platform.
Background
With the rapid development of the industrial internet, the production data, the equipment operation data, the mechanism model data, the process flow data and other digital assets of each enterprise in the industrial field show level increase. However, at present, the digital assets generated by each enterprise in the operation and production activities are stored only by using the storage platform, and the storage management of the digital assets mainly depends on the filing management of the related technicians of the enterprise.
The general industrial waste categories currently incorporated into statistics include mainly: the method comprises the following steps of smelting waste residues, coal ash, furnace slag, coal gangue, tailings, desulfurized gypsum, sludge, radioactive waste, red mud, phosphogypsum and other waste, wherein industrial waste can be recycled, so that the waste of resources can be reduced, and the problem that the industrial waste is inconvenient to sell and purchase due to the fact that the transaction platform of the conventional transaction platform is complex to manage is solved.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides an integrated management method of an industrial waste transaction platform.
The invention provides an integrated management method of an industrial waste transaction platform, which comprises the following steps:
s1: a storage and organization unit: the basic information of the type, unit price and quantity of the industrial waste can be sorted through the sorting module, and the information can be stored through the storage module;
s2: a login module: the client submits the authentication information, the identity is verified through the identity verification module, and a trading platform can be carried out after the identity is verified;
s3: a selection unit: the selection unit comprises a sale transaction module and a purchase transaction module, and the selection is to sell or purchase according to the requirement of a customer;
s4: a purchase unit: through the selection of the types of the substrate information in the S1, the specific quantity and unit price of the waste can be displayed after the types are selected, so that the customers can observe and understand the waste intuitively;
s5: an order module: the purchase type and quantity are selected through the purchase unit, order information is generated through the order module, and after a customer pays a subscription fee, the order information is sent to the background for processing through the transmitting module;
s6: a selling unit: when a customer sells industrial waste, the customer places the sold waste on a placing platform, a gravity sensing module on the placing platform monitors the placing platform, and whether an object is placed on the platform can be detected through the gravity sensing module;
s7: object recognition: when an object is placed on the placing platform in the S5 detection process, the object can be driven to rotate through the rotating mechanism, the number of rotating circles is 2-3, the object can be scanned through the identification mechanism, and waste can be identified;
s8: a logging module: after the identification module identifies the industrial waste, the information such as the quantity, the volume and the like of the industrial waste is input;
s9: an estimation module: the value of the industrial waste can be estimated through the estimation module, and the total value is given;
s10: transaction submission: when the client agrees to the transaction, the transaction information such as time, place and the like of the transaction is input, a transaction sheet is generated, and the transaction sheet is sent to the background for processing through the transmitting module.
Preferably, the storage module further comprises an order information storage module and a trade list storage module.
Preferably, the station performs processing including an outgoing module and an incoming module.
Preferably, the gravity sensing module in S6 is installed on the placement platform, and the gravity sensing module is set as a gravity sensor, the number of the gravity sensors is 3-4, and the gravity sensors are equally spaced.
Preferably, in S6, the rotating mechanism includes a placing table, a rotating motor is connected to the bottom of the placing table, and the rotating motor is a speed reduction motor.
Preferably, the identification mechanism in S7 is provided as cameras, and the number of the cameras is 3-5.
Preferably, a rotating mechanism is installed on the identification mechanism in S7, and the camera can be driven to rotate in the vertical direction by the rotating mechanism.
The method is convenient for the customers who need to sell the industrial waste and the customers who buy the industrial waste to buy, thereby integrating selling and buying and being convenient for people to use.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Example one
The embodiment provides an integrated management method of an industrial waste transaction platform, which comprises the following steps:
s1: a storage and organization unit: the basic information of the type, unit price and quantity of the industrial waste can be sorted through the sorting module, and the information can be stored through the storage module;
s2: a login module: the client submits the authentication information, the identity is verified through the identity verification module, and a trading platform can be carried out after the identity is verified;
s3: a selection unit: the selection unit comprises a sale transaction module and a purchase transaction module, and the selection is to sell or purchase according to the requirement of a customer;
s4: a purchase unit: through the selection of the types of the substrate information in the S1, the specific quantity and unit price of the waste can be displayed after the types are selected, so that the customers can observe and understand the waste intuitively;
s5: an order module: the purchase type and quantity are selected through the purchase unit, order information is generated through the order module, and after a customer pays a subscription fee, the order information is sent to the background for processing through the transmitting module;
s5: a selling unit: when a customer sells industrial waste, the customer places the sold waste on a placing platform, a gravity sensing module on the placing platform monitors the placing platform, and whether an object is placed on the platform can be detected through the gravity sensing module;
s6: object recognition: when an object is placed on the placing platform in the S5 detection process, the object can be driven to rotate through the rotating mechanism, the number of rotating turns is 2, the object can be scanned through the identification mechanism, and waste can be identified;
s7: a logging module: after the identification module identifies the industrial waste, the information such as the quantity, the volume and the like of the industrial waste is input;
s8: an estimation module: the value of the industrial waste can be estimated through the estimation module, and the total value is given;
s8: transaction submission: when the client agrees to the transaction, the transaction information such as time, place and the like of the transaction is input, a transaction sheet is generated, and the transaction sheet is sent to the background for processing through the transmitting module.
In this embodiment, the storage module further includes an order information storage module and a trade list storage module.
In this embodiment, the station includes an output module and an input module.
In this embodiment, the gravity sensing module in S6 is installed on placing the platform, and the gravity sensing module sets up to gravity sensor, and gravity sensor' S quantity is 3, and a plurality of gravity sensor equidistant settings.
In this embodiment, the rotating mechanism in S6 includes a placing table, and a rotating motor is connected to the bottom of the placing table and is set as a reduction motor.
In this embodiment, the recognition mechanism in S7 is set as cameras, and the number of cameras is set to 3.
In this embodiment, the identification mechanism in S7 is provided with a rotation mechanism, and the rotation mechanism can drive the camera to rotate in the vertical direction.
Example two
The embodiment provides an integrated management method of an industrial waste transaction platform, which comprises the following steps:
s1: a storage and organization unit: the basic information of the type, unit price and quantity of the industrial waste can be sorted through the sorting module, and the information can be stored through the storage module;
s2: a login module: the client submits the authentication information, the identity is verified through the identity verification module, and a trading platform can be carried out after the identity is verified;
s3: a selection unit: the selection unit comprises a sale transaction module and a purchase transaction module, and the selection is to sell or purchase according to the requirement of a customer;
s4: a purchase unit: through the selection of the types of the substrate information in the S1, the specific quantity and unit price of the waste can be displayed after the types are selected, so that the customers can observe and understand the waste intuitively;
s5: an order module: the purchase type and quantity are selected through the purchase unit, order information is generated through the order module, and after a customer pays a subscription fee, the order information is sent to the background for processing through the transmitting module;
s5: a selling unit: when a customer sells industrial waste, the customer places the sold waste on a placing platform, a gravity sensing module on the placing platform monitors the placing platform, and whether an object is placed on the platform can be detected through the gravity sensing module;
s6: object recognition: when an object is placed on the placing platform in the S5 detection process, the object can be driven to rotate through the rotating mechanism, the number of rotating turns is 2, the object can be scanned through the identification mechanism, and waste can be identified;
s7: a logging module: after the identification module identifies the industrial waste, the information such as the quantity, the volume and the like of the industrial waste is input;
s8: an estimation module: the value of the industrial waste can be estimated through the estimation module, and the total value is given;
s8: transaction submission: when the client agrees to the transaction, the transaction information such as time, place and the like of the transaction is input, a transaction sheet is generated, and the transaction sheet is sent to the background for processing through the transmitting module.
In this embodiment, the storage module further includes an order information storage module and a trade list storage module.
In this embodiment, the station includes an output module and an input module.
In this embodiment, the gravity sensing module in S6 is installed on placing the platform, and the gravity sensing module sets up to gravity sensor, and gravity sensor' S quantity is 4, and a plurality of gravity sensor equidistant settings.
In this embodiment, the rotating mechanism in S6 includes a placing table, and a rotating motor is connected to the bottom of the placing table and is set as a reduction motor.
In this embodiment, the recognition mechanism in S7 is set as cameras, and the number of cameras is set to 4.
In this embodiment, the identification mechanism in S7 is provided with a rotation mechanism, and the rotation mechanism can drive the camera to rotate in the vertical direction.
EXAMPLE III
The embodiment provides an integrated management method of an industrial waste transaction platform, which comprises the following steps:
s1: a storage and organization unit: the basic information of the type, unit price and quantity of the industrial waste can be sorted through the sorting module, and the information can be stored through the storage module;
s2: a login module: the client submits the authentication information, the identity is verified through the identity verification module, and a trading platform can be carried out after the identity is verified;
s3: a selection unit: the selection unit comprises a sale transaction module and a purchase transaction module, and the selection is to sell or purchase according to the requirement of a customer;
s4: a purchase unit: through the selection of the types of the substrate information in the S1, the specific quantity and unit price of the waste can be displayed after the types are selected, so that the customers can observe and understand the waste intuitively;
s5: an order module: the purchase type and quantity are selected through the purchase unit, order information is generated through the order module, and after a customer pays a subscription fee, the order information is sent to the background for processing through the transmitting module;
s5: a selling unit: when a customer sells industrial waste, the customer places the sold waste on a placing platform, a gravity sensing module on the placing platform monitors the placing platform, and whether an object is placed on the platform can be detected through the gravity sensing module;
s6: object recognition: when an object is placed on the placing platform in the S5 detection process, the object can be driven to rotate through the rotating mechanism, the number of rotating circles is 3, the object can be scanned through the identification mechanism, and waste can be identified;
s7: a logging module: after the identification module identifies the industrial waste, the information such as the quantity, the volume and the like of the industrial waste is input;
s8: an estimation module: the value of the industrial waste can be estimated through the estimation module, and the total value is given;
s8: transaction submission: when the client agrees to the transaction, the transaction information such as time, place and the like of the transaction is input, a transaction sheet is generated, and the transaction sheet is sent to the background for processing through the transmitting module.
In this embodiment, the storage module further includes an order information storage module and a trade list storage module.
In this embodiment, the station includes an output module and an input module.
In this embodiment, the gravity sensing module in S6 is installed on placing the platform, and the gravity sensing module sets up to gravity sensor, and gravity sensor' S quantity is 4, and a plurality of gravity sensor equidistant settings.
In this embodiment, the rotating mechanism in S6 includes a placing table, and a rotating motor is connected to the bottom of the placing table and is set as a reduction motor.
In this embodiment, the recognition mechanism in S7 is set as cameras, and the number of cameras is set to 5.
In this embodiment, the identification mechanism in S7 is provided with a rotation mechanism, and the rotation mechanism can drive the camera to rotate in the vertical direction.
The method is convenient for the customers who need to sell the industrial waste and the customers who buy the industrial waste to buy, thereby integrating selling and buying and being convenient for people to use.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (7)

1. An integrated management method of an industrial waste transaction platform is characterized by comprising the following steps:
s1: a storage and organization unit: the basic information of the type, unit price and quantity of the industrial waste can be sorted through the sorting module, and the information can be stored through the storage module;
s2: a login module: the client submits the authentication information, the identity is verified through the identity verification module, and a trading platform can be carried out after the identity is verified;
s3: a selection unit: the selection unit comprises a sale transaction module and a purchase transaction module, and the selection is to sell or purchase according to the requirement of a customer;
s4: a purchase unit: through the selection of the types of the substrate information in the S1, the specific quantity and unit price of the waste can be displayed after the types are selected, so that the customers can observe and understand the waste intuitively;
s5: an order module: the purchase type and quantity are selected through the purchase unit, order information is generated through the order module, and after a customer pays a subscription fee, the order information is sent to the background for processing through the transmitting module;
s6: a selling unit: when a customer sells industrial waste, the customer places the sold waste on a placing platform, a gravity sensing module on the placing platform monitors the placing platform, and whether an object is placed on the platform can be detected through the gravity sensing module;
s7: object recognition: when an object is placed on the placing platform in the S5 detection process, the object can be driven to rotate through the rotating mechanism, the number of rotating circles is 2-3, the object can be scanned through the identification mechanism, and waste can be identified;
s8: a logging module: after the identification module identifies the industrial waste, the information such as the quantity, the volume and the like of the industrial waste is input;
s9: an estimation module: the value of the industrial waste can be estimated through the estimation module, and the total value is given;
s10: transaction submission: when the client agrees to the transaction, the transaction information such as time, place and the like of the transaction is input, a transaction sheet is generated, and the transaction sheet is sent to the background for processing through the transmitting module.
2. The integrated management method of an industrial waste transaction platform according to claim 1, wherein the storage module further comprises an order information storage module and a transaction order storage module.
3. The integrated management method of an industrial waste transaction platform according to claim 1, wherein the station performs a process including an outgoing module and an incoming module.
4. The integrated management method of an industrial waste transaction platform according to claim 1, wherein the gravity sensing module in S6 is installed on the placing table, and the gravity sensing module is configured as a gravity sensor, the number of the gravity sensors is 3-4, and the plurality of gravity sensors are equally spaced.
5. The integrated management method of industrial waste transaction platform according to claim 1, wherein the rotating mechanism in S6 comprises a placing table, a rotating motor is connected to the bottom of the placing table, and the rotating motor is set as a speed reduction motor.
6. The integrated management method of industrial waste transaction platform according to claim 1, wherein the recognition means in S7 is configured as cameras, and the number of the cameras is set to 3-5.
7. The integrated management method of industrial waste transaction platform according to claim 1, wherein the identification mechanism of S7 is installed with a rotation mechanism, and the rotation mechanism can drive the camera to rotate in vertical direction.
CN202110507146.5A 2021-05-10 2021-05-10 Integrated management method of industrial waste transaction platform Pending CN113222696A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030061127A1 (en) * 2001-09-26 2003-03-27 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd) Method and system for providing information on industrial wastes, server and terminal for providing the information, recording medium for recording computer-readable program, and program allowing computer to execute process
CN105701697A (en) * 2016-02-03 2016-06-22 江阴华西村商品合约交易中心有限公司 Bulk chemical commodity transaction platform system
CN108460560A (en) * 2018-04-03 2018-08-28 孙利嫚 A kind of the commodity online trading system and its online transaction method of internet identification
WO2018182858A1 (en) * 2017-03-31 2018-10-04 Mastercard International Incorporated Waste management system and method
CN108645495A (en) * 2018-05-03 2018-10-12 温州三特食品科技有限公司 A kind of intelligence can trace electronic scale
KR102081321B1 (en) * 2019-03-28 2020-04-23 천정훈 System and method for trade of used items and computer program for the same
CN112541804A (en) * 2020-12-17 2021-03-23 欧冶链金再生资源有限公司 Purchasing and selling management system for steel scrap industry

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030061127A1 (en) * 2001-09-26 2003-03-27 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd) Method and system for providing information on industrial wastes, server and terminal for providing the information, recording medium for recording computer-readable program, and program allowing computer to execute process
CN105701697A (en) * 2016-02-03 2016-06-22 江阴华西村商品合约交易中心有限公司 Bulk chemical commodity transaction platform system
WO2018182858A1 (en) * 2017-03-31 2018-10-04 Mastercard International Incorporated Waste management system and method
CN108460560A (en) * 2018-04-03 2018-08-28 孙利嫚 A kind of the commodity online trading system and its online transaction method of internet identification
CN108645495A (en) * 2018-05-03 2018-10-12 温州三特食品科技有限公司 A kind of intelligence can trace electronic scale
KR102081321B1 (en) * 2019-03-28 2020-04-23 천정훈 System and method for trade of used items and computer program for the same
CN112541804A (en) * 2020-12-17 2021-03-23 欧冶链金再生资源有限公司 Purchasing and selling management system for steel scrap industry

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