Zinc Borate, Ammonium Polyphosphate, Magnesium Hydroxide manufacturer / supplier in China, offering Supreme Quality Zinc Borate 3.5 Hydrate for Plastics, Rubber Chemical Application, Fireproof Ammonium Polyphosphate APP Powder Factory for Industrial Use, Fire Retardant Ammonium Polyphosphate for Intumescent Coating and so on.