GEF Ingenieur AG
Phone: +49 6224 97 13 90
E-Mail: siskmr.support@gef.de

Representation China, Beijing PLT Pipeline Engineering Service Limited         
100176, Beijing
Room 1609, Building 9, No. 8,
Ronghuazhong Road, BDA
Phone: +86 108 772 41 10
Mobile: +86 13 60 11 82 616
E-Mail: info@pipelinetech.com.cn