1) Ion exchange resin, that is, the production process of cation and anion exchange resin involves the process steps and processes of using sulfuric acid, the concentration and impurities of the recovered sulfuric acid produced, and the specific procurement requirements of downstream customers, etc., based on which the recovered sulfuric acid is determined Category of technical indicator projects; 2) Test results of various technical indicators of recycled sulfuric acid samples by ion exchange resin manufacturers and third-party testing agencies, corporate standards for recycled sulfuric acid formulated by some ion exchange resin companies, and specific procurement requirements of downstream customers , national and industry standards for downstream customer products, etc., based on which the specific requirements, values, ranges, etc. of technical indicators for recycled sulfuric acid are determined; 3) existing national standards for industrial sulfuric acid, corporate standards for recycled sulfuric acid formulated by some ion exchange resin companies, and Recover the main impurities in sulfuric acid
T/ZGM 001-2017 history
2024T/ZGM 001-2024 Technical specifications for energy conservation certification for spiral wound reverse osmosis membrane elements
2022T/ZGM 001-2022 Specification of operation and management for membrane water treatment
2021T/ZGM 001-2021 Nanofiltration membrane element for drinking water treatment devices for household and similar uses
2017T/ZGM 001-2017 Recycled sulphuric acid from ion exchange resin industry