we are an export company in China .handling phosphate chemicals.our main products are as following;Phosphoric Acid(PA)Polyphosphoric Acid (PPA)Sodium Acid Pyrophosphate (SAPP)Sodium Hexameta Phosphate (SHMP)Sodium Tripoly Phosphate(STPP)Trisodium Phosphate(TSP)Tetra-sodium Pyrophosphate(TSPP)Yellow Phosphorus (YP)Formic AcidSodium FormateTetra-potassium Pyrophosphateour products are of high quality and we have a good service.