About: http://webisa.webdatacommons.org/39796095

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	Removing impurities such as boron and phosphorous, which can degrade solar panel performance, is a major obstacle.
http://www.w3.org/ns/prov#wasQuotedFrom	greentechmedia.com