... line is mainly used to produce kinds of door and window profile, clapboards, ceilings, etc.with PVC, PP, etc as materials. ... made of PVC powder. It is widely used as window and door profile, as well as decorative material. With modern technology and ... extruder, extrusion die, calibration unit, haul-off unit, film covering machine and stacker. The extruder is equipped with alternating-current converter ...