Polyphosphoric Acid can be used in water treatment to remove minerals and impurities from water, thereby improving the quality of water. Polyphosphoric Acid can reduce the formation of scale, maintain the unobstructed water pipe, so as to ensure smooth water flow and reduce pipe maintenance costs. Shandong Mingde Chemical Co.,Ltd could supply different types of Phosphoric Acid including Phosphoric Acid Food Grade, Phosphoric Acid Technical Grade and Phosphoric Acid Electronic Grade. Specifications: 105% PPA Items Units Superior Products First Grade …