| http://www.w3.org/ns/prov#value | - polypropylene, and poly-4-methylpentene-1; halogen-containing polymers such as polyvinylidene fluoride, vinylidene fluoride copolymer, polytetrafluoroethylene, tetrafluoroethylene copolymer, polyvinyl chloride, and polyvinylidene chloride; and polyester,
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