... -resistance 2,compact structure 3,suitable price 4,long using life Plastic PP Corrugated sheet Extrusion machine/plant 1,Sheet ... 100% recycled material, no need crystallization unit. 2, Plastic sheet production line, developed and made by our company, ... designed, has equably politicization, stable extrusion, high output, long lifespan and other merits. The exact calibration calendering equipment can ...