MAX STREICHER GmbH & Co.

Germany

 

 

 

 

China Petroleum Technology & Development Corporation

China

 

 

 

 

             

 

Rukun Al Yaqeen (RAY) International Oil and Gas, Oman

Oman

 

 

Belorusneft

Belarus

 

 

Geopetsa Servicios Petroleros 

Ecuador

 

 

Gazprom

Russia