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| Product alias: | Nanjing Engineering Brand YGZ90 Guide Rail Independent Rotary Rock Drill Nanjing YGZ90 Rock Drill Nanjing YGZ90 Rock Drill Product Information |
|---|---|
| Impact energy: | ≥190 |
| Impact frequency: | 33 |
| Specifications: | 22 |
| Scope of application: | 33 |
| Drilling depth: | 30 |
| Brand: | Zheng'an |
| model: | YGZ90 |
| Drilling speed: | 21 |
| Hole diameter: | 12 |
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