Semi-processed plastic materials; packing and insulating materials; tamping material made of elastomeric, polymeric and/or thermosetting copolymeric material in the form of pellets for use as filling material for synthetic grounds; polymer alloy made with virgin or recycled plastic for use in manufacture, namely, thermoplastic and polymeric materials, including polyphenyl sulfone sold in sheet form, rods, blocks and other stock shapes, for use by third party manufacturers