Shifang Changfeng Chemical Co.,Ltd is one of the leading enterprises specialized in researching ,producing and supplying phosphoric flame-retardants and fine phosphates. With perfect production lines and leading professional Technology,we have been accredited with ISO9001：2000 quality system. We are building the global leader in the phosphoric chemical industry and expanding tens of products including ammonium polyphosphate, sodium phosphates,ammonium phosphates and potassium phosphates.