Dongguan Hengyong Filter Media Technology Co., Ltd is the leading innovative developer and manufacturer since 1989. Located in the economically developed Pearl River Delta Center Dongguan China, specialized in various kinds of air filter media from polypropylene filter media, polyester synthetic fiber filter media to laminated composite filter media. Certified by ISO9001, UL2 and SGS, with emphasis on quality and service. Our strength is the ability to find innovative ways to meet marketplace or product requirements.