About: http://webisa.webdatacommons.org/441502215

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	PPG said it has developed mirror technology that enables fabricators to purchase large-area ???pre-silvered??? mirrors, cut them to desired size and subject them to heat treatments such as tempering, bending and heat-strengthening.
http://www.w3.org/ns/prov#wasQuotedFrom	usglassmag.com