... directly,food grade,high and stable quality,and competitive price! Phosphoric acid(H3PO4) we are supplying is manufactured with yellow phosphorus directly ... sincerely, Mr. SUNNanning Stull CO., LTDAdd: 11,12th Floor,Unit 2, Building 10,District C,Chunhuihuayuan,No. 11,Yunjing Road ,Nanning ...