GB/T 43359-2023 Integrated equipment based on membrane technologies for treating dyeing and finishing wastewater

GB/T 25279-2022 Hollow fiber flat-plat membrane module GB/T 43089-2023 Electrodialysis device for high-salinity-water concentration SL 83 GB/T 191-2000 Packaging—Pictorial marking for handling of goods GB/T 191-2008 Packaging—Pictorial marking for handling of goods GB/T 6461-2002 Methods for corrosion testing of metallic and other inorganic coatings on metallic substrates—Rating of test specimens and manufactured articles subjected to corrosion tests GB/T 7477-1987 Water quality—Determination of the sum of calcium and magnesium—EDTA titrimetric method GB/T 11903-1989 Water quality—Determination of colority GB/T 13195-1991 Water quality—Determination of water temperature—Thermometer or reversing thermometer method GB/T 13200-1991 Water quality—Determination of turbidity GB 13955-1992 Installation and operation of residual current operated protective devices GB/T 13955-2005 Installation and operation of residual current operated protective devices GB/T 13955-2017 Installation and operation of residual current operated protective devices GB/T 18593-2001 Anti-corrosive painting of fusion bonded epoxy coating powders GB/T 18593-2010 Anti-corrosive painting of fusion bonded epoxy coating powders DL/T 588-2015 The determination of water quality pollution index HJ 828-2017 Water quality: Determination of Chemical Oxygen Demand using Dichromate Method HJ 1147-2020 Water quality pH measurement using electrode method DL/T 588-1996 The determination of fouling index of water HJ/T 51-1999 Water quality—Determination of total salt—Gravimetric method HG/T 20700-2014 Engineering design code for programmable logic controller GB/T 191-2025 Graphical symbols marking for handling and storage of packages