This series product adopts polyester fiber weaving, material code PET, three classes of staple fiber and filament and monofilament. Product performance of polyester fibre with temperature < 130 ℃. Products are mainly used in pharmaceutical, non-ferrous metal smelting, chemical industry, fertilizer industry, etc, the acid is a class of plate and frame filter, centrifugal filter, vacuum suction device and flue gas dust removal, etc. Minimum product filtration precision can reach the following 5 microns.