pink granules of polypropylene or polyamide in test tube. background. plastics and polymers industry. monochrome

acetate background caoutchouc chemistry chloride compound compounding density dye elastomer ethylene factory gel granulate granules hdpe industrial industry lab laboratory ldpe manufacturing material monochrome ncopyspace nitrile pellet petrochemicals pigment pink plastic plastics polyamide polycarbonate polyethylene polymer polymers polypropylene polystyrene polythene polyvinyl primary production pvc raw research resin rubber science scientific technology test texture thermoplastic tpe tube