Cooperation Partner

PETROCHINA

Dagang Oilfield, Changqing Oilfield, Tarim Oilfield

SINOPEC

Shengli Oilfield

CNOOC

CNOOC
CNOOC Tianjin Branch 
CNOOC Shenzhen Branch
CNOOC Shanghai Branch
CNOOC Zhanjiang Branch 
COSL
CNOOC Energy Technology & Services Limited 
COOEC