... ,5-25mm Supply Air Conditioning Filter Media , Synthetic FIber Features1.Using polyester, polyamide, nylon, etc. chemical synthetic fibers, in accordance with different ... The integration between the fibers is closer, and the fiber is not easy to shed.4.Low flammability, fire ... of pollution, filtration of fresh air, pre-filtering prior to medium-efficiency filter, as well as filtration of return air ...