Diatomite Powder, Talc Powder, Tourmaline manufacturer / supplier in China, offering Bentonite Powder for Foundry Sands Mine Backfill Paper Coatings Rubber Additives, Tourmaline Powder for Thermal Insulation Water Treatment Air Purification Adhesives, Ceramic Ball for Petrochemical Catalysis Valve Balls Sealing Elements Pump Components and so on.