| http://www.w3.org/ns/prov#value | - ubstances, butadiene homopolymer rubber, and natural rubber and polyvinyl chloride, olefin resins comprising principally ethylene and/or propylene, methyl methacrylate resins comprising principally methyl methacrylate, acrylonitrile styrene copolymer resins, and methyl methacrylate, and other vinyl compounds.
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