真空用途（镜架）
These are low outgassing mirror holders which are ideal for using in the high vacuum conditions.
| Vacuum Mirror Holder | Vacuum Lens Holder | Vacuum Iris Diaphragm Holder | Vacuum Pedestral Bases | Vacuum Posts holders |
| VMHG | VLHG | VIH | VPST/VPM etc | VRO/VRS etc |  |
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