Tower Packings, Ceramic Balls, Molecular Sieve manufacturer / supplier in China, offering 1" 1.5" 2" PVC PP PE Rpp Polypropylene Plastic Pall Ralu Ring, Plastic Random Tower Packing 25 38 50 76 100mm PP Conjugate Rings, 16mm Ceramic Bio Filter Media Circular Quartz Filter Ring for Koi Pond and so on.