Business scope: Workover,
Sale,
Electrical Equipment,
Law,
Geological Drilling,
Oilfield Chemicals,
Perforation,
Drilling Fluid,
Environmental Engineering Technical Services,
Cable,
Design And Sales,
Engineering Geology,
Loan And Other Business,
Research And Development,
Drilling,
Import And Export Of Goods And Technology,
Logging,
Completion,
Liquid Mineral Exploration,
Conference Services,
Fracture
...