Jihua 3521 has independently developed bag-typed dust removing filter material. Its product performance has reached international advanced standards, broken foreign monopolies on high-end filter material, and filled domestic market gaps in this field. Jihua 3521 is the only company in this field to undertake tasks of 863 Program (National High-tech R&D Program) formulated by Ministry of Science and Technology, and turns out to be the domestic R&D base of high-performance filter materials. 3521 conducts R&D on filter materials which are used to curb PM2.5 fine dust pollution and the equipment is passed the middle acceptance test by Jiangsu Science & Technology Bureau. Products are widely applied to various industries such as thermal power, cement, steel and waste incineration, and filter bags are used in electric power enterprises like China Huaneng, Datang, and China Huadian, renowned domestic corporations such as China National Building Materials Group Corporation and Baosteel, and other hundreds of large foreign enterprises in India, Turkey, Malaysia, etc.