prov:value
| - Examples of semi- or non-reinforcing fillers are metal oxides, metal nitrides, glass beads, bubbles or fibers, metallic flakes, powders and fibers such as copper, nickel and aluminum, cork, organic resins, polytetrafluoroethylene, polychlorotrifluoroethylene, polyvinyl chloride, bentonite, diatomaceous earth, crushed quartz, mica, and mixtures thereof.
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