About: http://webisa.webdatacommons.org/355148949

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	In general, the metal must be clean,free of any oils, lubricants and other contaminants.
http://www.w3.org/ns/prov#wasQuotedFrom	patentgenius.com