... backwashed oil filter (5)It is still widely used in petroleum-chemical industry, nuclear electricity, sythetic fiber, film ... , food, pharmarcutical, aerospace and enviromental protection industries in respect of filtration and purification, gas-solid, liquid-solid ... telephone . Best wishes to you ! 1.Company : Lierfilter Technology Co., Ltd 2.Address : Huanyu Road,Xinxiang, Henan Province,China 3 ...