... acid manufactured by yellow phosphorus! High and stable quality!We have several years experiences in manufacturing and exporting phosphosric ... Africa,Cuba,Brazil...etc.The technical detail of phosphoric acid we are supplying is as follow: ItemsspecificationColor degree <=15H3PO4 %>=85SO4 ... enquiry!Thank you very much!Yours sincerely,Mr. SUNNanning Stull CO., LTDAdd: 11,12th Floor,Unit 2, Building 10, ...