About: http://webisa.webdatacommons.org/252150073

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	The present invention facilitates full penetration welds of refractory materials, such as quartz, sapphire, rutile, and other materials with a low thermal expansion coefficient.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com