Tower Packings, Ceramic Balls, Molecular Sieve manufacturer / supplier in China, offering 13-17% 3-20mm Alumina Balls Inert Ceramic Ball for Support Media, Plastic Bio Floating Ball with Sponge for Water Treatment, 1 Inch 2 Inch 3.5 Inch 3.75 Inch Plastic Hackectten Tri Pack Ball Scrubber Ball and so on.