Double stage extrusion unit 1.materials:PP,HDPE,LDPE,LLDPE,TPV,EVA,ABS and PS,etc. 2.CE certificate Double stage extrusion unit :The ... in low temperature in case of degarde.Principle and applications:1.Take advantage of twin-screw extruder and single.Twin-screw ... halogen cable,shield material,carbon black etc. Double stage extrusion unit