... polishing industry, sugar industry, compound fertilizer, etc. In the food in Formula: H3PO4 Rules: industrial use, 85%, with ... high concentration compound fertilizers. Phosphoric acid or soap, detergent, metal surface treatment, food additives, feed additives and water treatment agent used ... , is p ZhengLinSuan or more of the phosphoric acid solution. Colorless transparent or with pale yellow, thick ...