| Ort der Herkunft |
Sichuan China (Mainland) |
| Marke |
Qunhui |
| Modell-Nummer |
CNC machining |
It is use for optics eyepiece .High precision machine processing,use the spiral groove and focus sthech the both way ,to increase focus distance . The surface was done anodic oxidation treatment corrosion preventing .Welcome to OEM service.