With the improvement of living standards, people put more emphasis on “Friendly Environmental Protection”. At the request of majorities of customers, raw materials of Small Boss’products, such as PVC compound, PVC extrusion profile, MBBR biofilter media, are nontoxic and environmental, non-use of phthalate plasticizers, which is an elimination of such traditional heavy metals as lead and cadmium. With its food-grade standard, customers can rest assured that our products are safely serviced.