... qulity of bentonite powder 3.Hot-sale,bentonite of oil drilling,paint,coating etc 1.Introduction:Shijiazhuang Oushun Minerals Products Co ... ,grease,paraffin wax,white oil,lubricating oil,vaseline,ect.)Industrial waste oil(mineral oil like machine oil and lubricating oil)Recycling and regenerationResin and ... two years.4.Photo: Bentonite--hot-sale,high quality,of oil drilling,paint,coating etc.