About: http://webisa.webdatacommons.org/152514707

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	Our company mainly works in the fields of manufacturing, processing and repair of petroleum drilling tools and casing, research and development, manufacturing and repair of petroleum machinery, excavation and drilling ...
http://www.w3.org/ns/prov#wasQuotedFrom	chinaoilweb.com