Semi-processed plastics, namely, polystyrene resins, styrene monomers, polyethylene resins, ethylene monomers, polypropylene resins, propylene monomers, polyethylene terephthalate resins, and ethylene terephthalate monomers; recycled plastics in pellet form for use in further manufacture; recycled polystyrene resins in pellet form for use in further manufacture; recycled polyethylene resins in pellet form for use in further manufacture; recycled polypropylene resins in pellet form for use in ...