| http://www.w3.org/ns/prov#value | - The chamber may be comprised of paper, paperboard, wood, woven materials including cotton and polyester, nonwoven materials including films and laminates, ceramics including clays and porcelain, glass, metals including aluminum, steel, tin and bronze, or any combination thereof, wherein the chamber materials may or may not be coated to provide a moisture barrier to the contents.
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