Profile: Shanghai SAM Environment Protection Co., Ltd is specialized in manufacturing and developing filter products. We are an ISO 9001:2000 certified company. Our main products include bag filter housings, filter bags, dust collector filter bags, strainer, automatic self-cleaning filters, automatic backwashing filters, plastic filters, stainless steel heat preservation filters, vortex self-cleaning filters and filtration equipments. Our top-enter bag filter adopts patent ring structure and relevant fittings. Inside the bag filtration system, the filter bag is supported by an inside metal basket. The incoming fluid is allowed to flow out after filtered by the bag; thus the impurity is intercepted in the filter bag.