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agent, background, blue, chemical, chemistry, closeup, color, colorant, coloring, dye, element, extrusion, grain, grained, granulate, granules, hdpe, heap, industrial, industry, injection, lab, material, molding, pallet, particle, pattern, pellets, petrochemical, petrochemicals, pigment, plastic, polyethylene, polymer, polymeric, polymers, polypropylene, polystyrene, product, production, pvc, raw, recycling, research, resin, science, substance, technology, thermoplastic, transparent,