About: http://webisa.webdatacommons.org/267467003

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	A cleaning action with moderate to strong removal of material is achieved by caustic or acidic etching using strongly alkaline or acidic pickling solutions such as e.g. caustic soda or a mixture of nitric acid and hydrofluoric acid.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com