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additive, agent, background, chemical, chemistry, color, colorant, coloring, dye, dyed, element, equipment, experiment, extrusion, factory, glass, granulate, industrial, industry, isolated, lab, laboratory, material, molding, natural, particle, pattern, petrochemical, pigment, plastic, polyethylene, polymer, polymeric, polypropylene, polystyrene, production, prohibited, pyrex glass, raw, recycling, research, resin, science, substance, technology, thermoplastic, white,