white secondary processing plastic granule comes out of the granulator crusher into small granules. concept of plastic

background chemical chemistry clear density element extrusion factory grained granulate granulator granule granules industrial industry made manufacturing material mold molding particle pellets petrochemical pigment plastic pollution polycarbonate polyethylene polymer polymeric polymerization polypropylene polystyrene polythene production protoplast pvc raw recycling research resin technology thermoplastic translucent working