| http://www.w3.org/ns/prov#value | - The substrate mentioned above includes inorganic substrates such as glass, slate, concrete, mortar, ceramics, stone, etc.; metal substrates such as metal sheets comprising aluminum, iron, zinc, tin, copper, titanium, stainless steel, galvanized iron, tinned iron, and the like, metals plated on its surface with zinc, copper, or chrome, metals treated on its surface with chromic acid, phosphoric aci
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