汽车行业/ Automobile Industry煅烧刚玉/ Calcined Alumina Oxide底胶树脂——复胶树脂/Resin over Resin疏植砂/Open Coat,活性填料涂层/Active Filler Coating High efficiency, anti-clogging; Clean grinding interface;Dry grinding. making dish or other special-shape products.涂料/Putty 汽车车身/Automotive body 油漆/Paints