|
|
|
- Cross Wind Drill Bits
- During drilling, the drill bit is the main tool for breaking rock, and the wellbore is formed by the drill bit breaking rock. The formation of a wellbore is not only related to the characteristics of the rock being drilled and the performance of the drill
-
Hebei Yongguang Mining Equipment Co., Ltd
[Verified]
|
|
Negotiable
|