Nanjing Jihua 3521 Environmental Protection Science and Technology Co., Ltd is a wholly owned subsidiary of Nanjing Jihua 3521 Special Equipment Co., Ltd and is on attachment to Xin-xing Jihua Group, a state-owned military listed company. We are professional in manufacturing all kinds of high temperature resistance and corrosion resistance filter medium in China.

Our company is the exclusive filtration manufacturer in China for the "863 project" of the National Science and Technology Ministry and is also awarded as "High-tech Enterprise of Jiangsu Province", "Technical Center of Jiangsu Enterprise" and "Technical Center of Dioxin Decomposing and Dust-removing Engineering in Jiangsu Province".

The company has imported advanced equipment, including the carding machine, needle-punching, heat setting, automatic sewing machine and overhead chain conveying; It is also has a well-fund detecting system formed by VDI filtration dynamic detector, permeability apparatus, spectrum analyzer (FTIR), SEM and so on. After years of efforts, we have possessed a number of national patents and advanced technology in fluorine treatment.

Our major products are PPS series filter, p84 series filter, PTFE series filter, NOMEX series filter, ZMS series filter, polyester filter and so on. In addition, we also manufacture dust keels and other related spare parts, offer the professional after-sales service. The products are widely used in the dust removing area of power, cement, iron and steel, waste incineration, carbon black, chemicals and other industries.