Yunnan Tianyao Chemical Co.,Ltd is a company , affiliated to Yuntianhua group, specialized in the research, manufacture and distribution of fine phosphorus chemical products including Polyphosphoric Acid (PPA), food & technical grade Phosphoric Acid , Ammonium Polyphosphate (APP) and other organic phosphorus based products. With the knowledge and technical supports from Yunnan Chemical Research Institute, affiliated to Yuntianhua group as well, Tianyao has successfully used the "Thermal Polypho...
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