Activated Carbon, Polyaluminium Chloride, Polyacrylamide manufacturer / supplier in China, offering Reusable 700g Replaced 25kg Sand Polyester Fiber Filter Ball Filter Media, 700g Package Polyester Fiber Filter Ball Filter Media for Water Treatment, Sludge Dewatering 25kg Bag Partially Hydrolyzed Cationic Polyacrylamide Polymer Flocculant and so on.