Zinc Borate, Ammonium Polyphosphate, Magnesium Hydroxide manufacturer / supplier in China, offering Zinc Borate - 2335 (2ZnO. B2O3 3.5H2O), Halogen Free Flame Retardant Ammonium Polyphosphate Phase II, Ammonium Polyphosphate 68333-79-9 APP Factory and so on.