Test items Refined High-purity grade Food-grade Industrial-grade Sodium metabisulfite % 98.5 98 97.5 97.0 Iron Fe % 0.0005 0.001 0.0015 0.002 Water insoluble matter % 0.005 0....
Xinjiang Huaxing Youbang Trading Co., Ltd is a company specializing in domestic and international trade business, mainly engages in machinery of geological exploration, oil and coal mining, mining....