| http://www.w3.org/ns/prov#value | - Furthermore, for the material to be used on the inner side of the FRP layer in order to produce a composite article of three or more layers, any of thermoplastic resins such as polyethylene, polypropylene, polyvinyl chloride, ABS resins, Teflon, and polyvinylidene difluoride can be used as a solid or foamed body.
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