Shanghai hefil purifying equipment manufacturing co.,ltd. was found in 2001,hefil brand is famous both at home and abroad.Hefil is devoted to the development,manufacturing,wholesale and retail or air filters,chemical filters,high temperature resistance filters,fan filter units,and other cleaning equipment and clean room products,and also provide the services of related technology and equipment.Hefil has the most advance computer-controlled automatic production lines for the production of mini-pleat panel air filters,separator air filters and cartridge filters,and possesses perfect testing process and the ndust -free workshops.Hefil have successfully obtained ISO 9001:2008 quality management system certification;the products of HEFIL have been certified by UL,SGS,ROHS,BV and TUV.