Zhejiang Zengxin Chemistry Co., Ltd.
Profile: Zhejiang Zengxin Chemistry Co., Ltd. manufactures fine chemicals with phosphor and its derivatives. We are ISO 9001 and ISO 14001 certified. Our products include sodium hypophosphite, hypophosphorous acid, tetrakis [hydroxymethyl] phosphonium sulfate, tetrakis [hydroxymethyl] phosphonium chloride and tetrakis [hydroxymethyl]phosphonium chloride urea. The hypophosphorous acid is used as a reductant in electroless nickel plating. The tetrakis [hydroxymethyl] phosphonium chloride is used as a fire retardant.