many black and gray granules of polypropylene, polyamide. background. plastic and polymer industry, industry. microplastic product

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