... oil drilling,paint,coating etc 1.Introduction:Shijiazhuang Oushun Minerals Products Co.,Ltd. is specialized in manufacuring and exporing Bentonite,Bentonite ore ... industrial purposeDecolorization and refinementIn petroleum industryDecolorization,refinement,and purification of minerals(diesel,kerosene,gasoline,grease,paraffin wax,white oil,lubricating oil ...