Magnesium Oxide, Ammonium Chloride, Magnesium Sulfate manufacturer / supplier in China, offering High Purity 99% CAS 7487-88-9 Powder and Granular Magnesium Sulfate Anhydrous, Versatile Magnesium Oxide Powder for Diverse Industrial Needs, High Quality Magnesium Oxide 60/ 85/90/99% MGO Produce Magnesium Sulphate CAS1309-48-4 and so on.