PF4T 2-StageMelt Filter, Filtration System1. Application: Polymer Filter has already been widely used for PSF, Polyester Filament Yarn, POY, FDY, DTY, Nylon(PA,PA6, PA66, PA11), PP, Non-Woven Fabrics(Spun-bonded & Melt-blown), Composite Chemical Fiber(Nylon and Polyester), BOPET Film2....