| http://www.w3.org/ns/prov#value | - Examples of useful reinforcing materials are inorganic fibers such as asbestos, rock wool, glass fiber, ceramics fiber, carbon fiber and metal fiber; natural fibers such as pulp, cotton, wood fiber, hemp, etc.; and synthetic fibers such as rayon and fibers of polyacrylonitrile, polypropylene, polyamide and polyester.
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