| http://www.w3.org/ns/prov#value | - For adjustment of the surface resistivity, used is a conductive substance, for example, an inorganic material such as sodium chloride, potassium chloride, calcium chloride, sodium sulfate, zinc oxide, titanium dioxide, tin oxide, aluminum oxide, or magnesium oxide, or an organic material such as alkylphosphoric ester, alkyl sulfuric ester, sodium sulfonate salt, or quaternary ammonium salt, and it
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