| http://www.w3.org/ns/prov#value | - Materials of construction may include polyolefins such as low, medium or high density polyethylene including low and linear low density polyethylene, polypropylene, as well as copolymers of ethylene and/or propylene with other polar or non-polar comonomers; polyamides such as nylons, polyesters such as polyethylene terephalate, polybutyleneterephalate, polyethylenenaphthalate; polyurethanes, polya
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