| http://www.w3.org/ns/prov#value | - The substrates used in the present invention are a polystyrene polymer, a butadiene-styrene copolymer or a butadiene-styrene copolymer mixed with one or more polymers or copolymers chosen from polystyrene, styrene-acrylonitryl copolymers, or styrene-methylmethacrylate copolymers, polypropylenes, polycarbonates, or the like.
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