Jilin Geophysical Company (JGC)
Address：2752 Dongsheng Street, Changchun City, Jilin Province, China 
Postcode: 130033
Email：JGC@jilin-geophysical.com
Telephone：0431-84645075  Fax(Administrative office)：0431-84641060
Contacts：liuying（17704317610、0431-84641063、84645075转6226）