行业分类: 油服工程

China Petroleum Engineering Corporation

Offshore Oil Engineering Co., Ltd.

Sinopec Oilfield Service Corporation

CNOOC Energy Technology and Services Limited

China Oilfield Services Limited

Zhongman Petroleum and Natural Gas Group Corp., Ltd.

Bomesc Offshore Engineering Company Limited

Beiken Energy Group Co.,Ltd.

Tong Petrotech Corp.

SINO GEOPHYSICAL CO.,LTD

CHINA OIL HBP SCIENCE&TECHNOLOGY CO.,LTD

Zhejiang Renzhi Co.,Ltd.