Bag Filter has 1 pc �?180mm bag cartridge inside of it. A. Fully Filter Housing and accessories are made of FRP material( which are �nished by SMC method) .Non-corrosive, no leakage and could bear high pressure & high temperature. B. Filter internal structure design is unique, novelty and reasonable. The lower end is supported by a continuous air. The upper end is provided with the �lter bag positioning lock block. The �lter bag can be �xed only by rotating it 60 degrees. C. The customers only need to revolve the �lter cartridge then could be �xed because internal structure has its cartridge positioning function. Install and change cartridges without any tools, it also decrease the time of change cartridge. D. The surface of bag fillter adopts the laminating process, which is beautiful, environmentally friendly and color adjustable.