Ceramic Ball, Pall Ring, Structured Packing manufacturer / supplier in China, offering 25mm Perforated Porous Alumina Ceramic Ball Porous Ceramic Ball, Metal Structured Packing SS304 SS316 Metal Corrugated Plate Structured Packing, PP PTFE Pall Ring 16mm 25mm 38mm 50mm 76mm Polypropylene Plastic Pall Rings and so on.