Tower Packings, Ceramic Balls, Molecular Sieve manufacturer / supplier in China, offering Plastic Packing Raschig Ring PP 25mm Raschig Ring, 1′ ′ 2′ ′ Plastic Vsp Ring 25mm 50mm Star Ring for Tower Packing, 0.4-0.8mm 1.6-2.5mm Sodium Lithium Molecular Sieves 13X for Oxygen Concentrator and so on.