top view on two glass cups with black plastic polypropylene granules, masterbatch polymer grain, on black backdrop. hdpe

polymer masterbatch plastic black bowl raw resin pellets cup chemistry dye isolated granules top extrusion polyethylene glass grain compound plant petrochemicals pile industry material thermoplastic factory technology polypropylene polystyrene background science petrochemical injection recycling pattern color chemical hdpe research pvc element production granulate molding pet industrial pigment closeup