Shanghai Feizuo Environment Technology Co., Ltd., a subsidiary of the HL Filter Group, is its technology and sales branch established in Shanghai Jiading District. The company’s production base is located in the Guangde Economic Development Zone, primarily engaged in industrial fluid filtration and powder collection. It specializes in the production, sales, and technical application services of needle-punched felt media, monofilament filter mesh, filter bags, membrane filter cartridges, Stainless steel filter housings, and filter bag cages, as well as project design and installation services.