About: http://webisa.webdatacommons.org/242754849

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Impurities such as carbide and the like which are stuck to copper can be removed by implementing cleaning, vibration, rotation with fine sand, according to demands.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com