| http://www.w3.org/ns/prov#value | - Among them, glass fiber is suitable.Examples of the powdery inorganic fillers include carbon black, graphite, silica, quartz powder, glass beads, milled glass fiber, glass balloon, glass powder, calcium silicate, aluminum silicate, kaolin, clay, diatomaceous earth, silicates suchas wollastonite, metallic oxides such as iron oxide, titanium oxide, zinc oxide, antimony trioxide and alumina, metal ca
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