| |||
| 检验盖章 | |||
|
test seal : 18 phrases in 7 subjects |
| Compressors | 1 |
| Electricity | 1 |
| Mechanics | 1 |
| Oil / petroleum | 1 |
| Sealing | 10 |
| Space | 3 |
| Technology | 1 |
| |||
| 检验盖章 | |||
|
test seal : 18 phrases in 7 subjects |
| Compressors | 1 |
| Electricity | 1 |
| Mechanics | 1 |
| Oil / petroleum | 1 |
| Sealing | 10 |
| Space | 3 |
| Technology | 1 |