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This post was last edited by Guan Gongyu on 2016-6-19 at 14:35. It serves as a marker post for moderators to handle posts, intended to facilitate moderation tasks by moderators and other administrative staff； In principle, posts above this one are new topic posts or those with new replies, while posts below this one are those that have been reviewed and handled by the moderators. 1. HaiChuan Freelancers’ large-scale “public welfare” event shines brilliantly! http://bbs.hcbbs.com/thread-1576975-1-1.html 2. Address of the bounty hall. Current main topics for bounty offers (updated weekly): Summary of bounty offers, last updated on June 19, 2016. Serial number, topic, amount of Haichuan coins, status: 1. Please conduct system testing for this technical expert and create a detailed user guide – 1000, in progress; 2. Haichuan coin bounty: A specialist is needed to prepare the required design documents based on the horizontal pressure vessel design drawings I provided – 180, in progress; 3. Seeking information on companies engaged in the export of mechanical pumps and valves, as well as international projects in the chemical and environmental protection sectors – 180, in progress; 4. Haichuan coins: Instructions for DCS control of cascade pumps – 100, in progress; 5. Haichuan coin bounty: Does anyone know which domestic factory produces such axial flow pumps? 80 in progress. 6 HaiChuan Coin Freelancer – sealing issue with the solid powder feeding system. 50 in progress. 7 Freelancer seeking help regarding glue filtration equipment! It is hoped that manufacturers can provide high-quality filtration equipment! 50 In progress 8 Seeking 50 In progress 9 Survey on corrosion issues in MTBE/butylene plants 50 In progress 10 [Haichuan Coin Freelancers] Seeking PID diagrams for 3.5 million tons of heavy oil catalytic cracking 30 In progress 11 Methanol distillation control scheme 20 In progress 12 Solutions for LNG regasification 20 In progress 13 [Freelancer charity project] The company has sodium sulfate as a by-product and wants to install an electrolysis system with a capacity of 10,000 tons 20 In progress 14 Haichuan Coin Freelancers seeking information on manufacturers selling used chlor-alkali electrolyzers 20 In progress 15 Haichuan Coin Freelancers: Mature technology for butyl phthalate plasticizers 20 In progress 16 Looking for information and technical questions related to the isomerization of butylene into isobutylene* 20 In progress 17 Materials for the 2015 National Symposium on Ethylene Oxide and Its Derivatives – Technology/Market 15 In progress 18 Who can provide drawings for container-based mobile houses? 15 In progress 19 Haichuan Coin Freelancers: How to prevent sticking during the drying process of water-based acrylic resins? 10 In progress. 20 [Woker Public Welfare Project] Addressing the issue of excessive barium sulfate in brine using the barium chloride method – 10 in progress. 21 Seeking a paper or guidance on the design of the distillation section for a process that produces 50,000 tons of dimethyl carbonate per year… Heavy rewards available. 10 in progress. 22 The partial pressure, viscosity, and surface tension of dimethyl carbonate between 100 and 200 degrees Celsius. . . 10 In progress 23 【Haichuan Coin Freelancer】Seeking experience in research on coal-based methanol production 10 In progress 24 【Haichuan Coin Freelancer】CAD design drawings for fixed tube sheets – split double tube sheet heat exchangers 10 In progress 25 【Haichuan Coin Freelancer】JK Simmet grinding process simulation software; seeking a demo version of the software 10 In progress 26 【Haichuan Coin Freelancer】Chinese versions of appendices A, B, C, D of EN 12952-5 10 In progress 27 【Haichuan Coin Freelancer】Does anyone have image materials related to isothermal compressors? 10 In progress 28 【Haichuan Coin Freelancer】Chinese version of DNV GL material and welding specifications – who can provide it? 10 In progress 29 【Haichuan Coin Freelancer】Who has the manuals for the speed control systems and turning devices of Mannheim turbine engines? 10 In progress 30 【Woker Charity Campaign】pH 10 of carbonate buffers at different concentrations – in progress 31 Introduction to applications of wide-channel plate heat exchangers in oil fields – 10 in progress 32 HaiChuan Coin Wokers seeking instructions for explosion-proof motors in Jiamusi – 10 in progress 33 Errors that occur when orifice plates are installed in the wrong direction – 8 in progress 34 【HaiChuan Coin Wokers】Who can provide ‘Fundamentals and Practices of Mechanical Engineering (Beginner Level)’? – 5 in progress 35 HaiChuan Coin Wokers seeking data on urea-based compound fertilizers – 5 in progress 36 HaiChuan Coin Wokers seeking assistance! Manufacturer of DCC cracking agents and heavy oil catalysts! 5 in progress 37 Inquiry about the price of electrodesalination equipment? 5 in progress 38 HaiChuan Coins – Seeking advice from freelancers! Magnesium oxide, wet flue gas desulfurization, crystallization issues – in progress. 39. Haichuan Coin Freelancer: seeking suppliers of organic gas separation membranes – in progress. 40. Seeking help regarding the proceedings of the 2015 China Petroleum Refining Technology Conference – in progress. 41. Unit control – in progress. 42. Haichuan Coin Freelancer: seeking the complete version of JBT7689-2012 – in progress. 43. Seeking contact lists for coal chemical and petrochemical conferences held in 2016 – in progress. 44. Haichuan Freelancer’s large-scale “public welfare” event is off to a great start! 1 In progress. 45 What is the current status of domestic production and operation of these three types of equipment in domestic ethylene plants? 20 Completed. 46 HaiChuan Coin freelancers: I would like to ask the experts what exactly the P value in PID control represents. 20 Completed. 47 Looking for a Chinese version of a contract template for on-site construction management outsourcing services. 10 Completed. 48 [HaiChuan Coin freelancers] Urgently needed: the Anhui local standard “Guidelines for Handling Liquefied Petroleum Gas Leaks”. 10 Completed. 49 Procedures for purging and replacing containers and equipment before replacing the catalyst in MTBE systems. 10 Completed. 50 Seeking to download documents from CNKI. 5 Completed. 51 Safety design specifications for caustic soda production facilities (draft for comments). 1 Completed. 52 This post is a tutorial on how to use the Technical Freelancer system! 1 Completed. 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Rules—http://bbs.hcbbs.com/thread-1223204-1-1.html. Prohibited content--http://bbs.hcbbs.com/thread-858040-1-1.html. Front-end Management Operation Instructions — A Must-Read for Moderators, Version 2012 -- http://bbs.hcbbs.com/thread-960282-1-1.html.