1,PVC free foaming plate extrusion line 2,screw type:double screw 3,PVC control system ... PVC free foaming board ,skinning foaming extrusion line is composed of special twin-screw extruder ,die and downstream equipment ,Our company can ... technique.This machine has the features of high output ,stable extrusion ,high foaming ,smooth and wearable surface,Equipped with printing machine ...