... .with bv ce certificate 4.accept L/C D/A Hot Sales Coal Briquette Machine Direct Factory Price From BV Verified Supplier ... item is mainly used to suppress pulverized coal, iron powder, coke, aluminum powder, scrap iron, iron oxide skin, toner, toner, slag ... , gypsum, tailings, sludge, kaolin, activated carbon, coke breeze and many other powder or dregs into small balls ...