About: http://webisa.webdatacommons.org/249565036

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	Some improved adhesion over the etching process was obtained by pumice spraying to micro-etch the copper surface or provide cavities in the copper surface to which the resin such as the epoxy resin of the prepreg could be bonded to.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com