... screw extruder 2) PVC material, and single or multi-layer sheet. PVCArchitecture: such as building wall board, decoration board, housing, ... DIE was designed special double throttle,it adjusts thickness of sheet exactly. Temperature control, it can exactitude control the ... temsion,and adjust speet and furling rension atwill fir furiling sheet metal unit. Dricing strip unit set width of the products. ...