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| Place of Origin | Shanghai |
| Size | 37mm |
| Frame thickness | 1.3mm |
| Frame height | 2.91mm |
| Filter material | HD optical glass |
| Frame material | Aerospace aluminium |
| Surface quality | 0/0, 40/20 ~ 80/50 |
| Material | Aluminum + Optical Glass |
| Surface Accuracy | 1/10 in, 1/4 into 2 into |











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