Nanometer microporous olefine hydrocarbon permeable membrane is a kind of plastic film which adopted unique dispensation and technologies of nanon and hole forming by stretching. Compared with other ordinary plastic films, it has the following advantages:permeable but not pervious,high tensiblity and soft texture. This product is mainly applied to sanitary towels, diapers, medical one-off antifouling goods, fresh maintenance bags, fruit covers, eco-friendly and national defense industries. Our products have been approved by Provincial Appraisement Department. All experts agreed that this technology goes ahead of the domestic industry and meets the advanced level of the world.