| http://www.w3.org/ns/prov#value | - Examples of inorganic or organic bulk materials according to (a) are quartz, ceramics, glasses, silicate minerals, silica gels, metals, metal oxides, carbon materials such as graphite or glassy carbon, natural or synthetic organic polymers, or laminates, composites or blends of said materials, in particular natural or synthetic organic polymers which are known in large number.
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