Since 1985, HL filter has been designing and manufacturing air filtration and liquid filtration for the industry worldwide. HL filter is a family owned company headquartered in Suzhou, Jiangsu, China, with additional locations in Anhui, Guangzhou, Zhejiang, Shanghai, Tianjin, etc. 2 factories and 6 offices in China. And one America branch company, HL filter USA, LLC. HL filter is devoted to developing needle punched felt, including Polyester(PET) needle felts, Antistatic needle felts, Polypropylene(PP) needle felts, PPS needle felts, Polyamide P84 needle felts, PTFE Needle Felts, Aramid Nomex needle felts, Homo-polymer Acrylic Needle Felts, FMS needle felts, dust filter cloth, dust filter bags, liquid filter bags, filter cartridges and filter housings.