Sodium tripolyphosphate(STPP),industrial grade,white powder,good water soluble,low impurity content,high and stable quality! We are gold supplyer ... Japan,Korea,Thailand,Singapore,Malaysia,Philippines....etc.Sodium tripolyphosphate industrial grade we are supplying have a character as follow:ItemsSpecificationWhiteness ... -771-5790667Mobile:+86-13607872333 SODIUM TRIPOLYPHOSPHATE(STPP) industrial grade