| http://www.w3.org/ns/prov#value | - Examples of the additive include at least one selected from among copper (for example, electrolytic copper powder), metal oxides such as copper oxide, iron oxide, zinc oxide, cobalt oxide, manganese oxide, molybdenum oxide, nickel oxide, bismuth oxide, silica, and alumina, metal carbonates and basic metal carbonates such as cobalt carbonate, calcium carbonate, basic zinc carbonate, and basic coppe
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