wpc formwork foam board 1.Conical Twin Screw Extruder 2.High Effeciency,easy operate 4.Energy Saving Machine wpc formwork ... foam board 1.SJSZ 80/156 Conical twin Screw ... traine compartment, roof shed, case core layer, inner upholster, etc.2.Architecture:such as building wall board, decoration board, housing, office ...