Water Purification, PAM, PAC manufacturer / supplier in China, offering High Purity Poly Aluminum Chloride Plant Coagulant Flocculant Chemicals Drinking Grade Yellowish Powder, High-Performance Degreasing Bacteria Degrades Oils Efficiently Enhances Water Quality Wide Applicability, Carbon Source Cod 100W for Improving Biological Activity and Improve The Removal Rate of Total Nitrogen and Ammonia Nitrogen and so on.