... power station, smelting, petroleum, coke, machinery. Multiple Filtration MaterialsYingtelai(r) Coated Filtration Materials are made from texturized PTFE poriferous film and ... construction, food stuff, and so on.Yingtelai(r) Multiple Filtration Matericals used many materials such as PPS, P84, METAMAX, ... the cost, avoid the demerit and improve the filter performance. Multiple Filtration materials