Business scope: Building Materials,
Equipment,
Electronic Product,
Sale,
Sale,
Made From Metal,
Drill,
Downhole Tools,
Test,
Diamond Bit,
Composite Drill,
Roller Bit,
Drilling Engineering,
Provide Oil,
Screw Drilling Tool,
Electronics,
Drilling Equipment And Tools,
Leasing And Technical Services,
Goods And Technology Import And Export Trade,
Downhole Operation Engineering,
...
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