HB 5408-2004 Specification for salts of heat treatment for aviation

GB 190-1990 Labels for packages of dangerous goods GB 190-2009 Packing symbol of dangerous goods GB/T 191-2000 Packaging—Pictorial marking for handling of goods GB/T 191-2008 Packaging—Pictorial marking for handling of goods GB 2367-1990 Sodium nitrite for industrial use GB 2367-2006 Sodium nitrite for industrial use GB/T 2367-2016 Sodium nitrite for industrial use GB/T 1266-2006 Chemical reagent—Sodium chloride GB/T 13025.3-1991 General test method in salt industry—Determination of moisture GB/T 13025.3-2012 General test method in salt industry—Determination of moisture GB/T 13025.4-1991 General test method in salt industry—Determination of insoluble matter GB/T 13025.4-2012 General test method in salt industry—Determination of insoluble matter GB/T 13025.6-1991 General test method in salt industry—Determination of calcium and magnesium ions GB/T 13025.6-2012 General test method in salt industry—Determination of calcium and magnesium GB/T 13025.8-1991 General test method in salt industry—Determination of sulfate ion GB/T 13025.8-2012 General test method in salt industry—Determination of sulfate GB/T 1617-2002 Barium chloride for industrial use GB/T 1617-2014 Barium chloride for industrial use GB/T 1617-2023 Barium chloride for industrial use GB/T 1918-1998 Potassium nitrate for industrial use GB/T 1918-2011 Potassium nitrate for industrial use GB/T 1918-2021 Potassium nitrate for industrial use GB/T 224-1987 Determination of depth of decarburization of steel GB/T 224-2008 Determination of depth of decarburization of steels GB/T 224-2019 Determination of the depth of decarburization of steels GB/T 3049-1986 Chemical products for industrial use—General method for determination of iron content—o-Phenanthroline spectrophotometric method GB/T 3049-2006 Chemical products for industrial use—General method for determination of iron content—1,10-Phenanthroline spectrophotometric method GB/T 4553-2002 Sodium nitrate for industrial use GB/T 4553-2016 Sodium nitrate for industrial use GB/T 609-1988 Chemical reagent General method for the determination of total nitrogen GB/T 609-2006 Chemical reagent—General method for the determination of total nitrogen GB/T 609-2018 Chemical reagent—General method for the determination of total nitrogen GB/T 646-1993 Chemical reagent—Potassium chloride GB/T 646-2011 Chemical reagent—Potassium chloride GB/T 6679-2003 General rules for sampling solid chemical products GB/T 9724-2007 Chemical reagent—General rule for the determination of pH GB/T 191-2025 Graphical symbols marking for handling and storage of packages