| http://www.w3.org/ns/prov#value | - in addition to rubbers such as urethane rubber, butadiene rubber, nitrile rubber, acrylic rubber, natural rubber and the like, polyethylene, polypropylene, polyester,a styrene-butadiene copolymer, an ethylene-vinyl acetate copolymer, an ethylene-acryl copolymer, a vinyl chloride-vinyl acetate copolymer, vinylidene chloride resin, plasticizer-containing vinyl chloride resin, polyamide resin, pheno
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