Business scope: Fracture,
Coalbed Methane Exploration And Development,
Mechanical Equipment Repair,
Import And Export Trade,
Sale,
Workover,
Mud Technical Services,
Oil Drilling,
Orientation,
Petroleum Engineering Technical Services,
Mud Logging,
Mechanical Equipment Processing,
Logging,
Processing And Sales,
Lease,
Cementing,
Drilling Aids,
Sale,
Downhole Operation,
Drill Manufacturing,
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