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| Buy Request |  | Sell Offer |  | Company |  | Reviews | |
| Expire | Country | Pic | Subject | Popularity |
| never |  CN |  | Low Order Waveplates | 415 |
| Aug 01 2020 | CN | | Optical BK7 windows with polished | 415 |
| never | CN | | Front Surface Mirror | 414 |
| Aug 01 2020 | CN | | FS,SapphireSF11 optical rod lens | 414 |
| Aug 01 2020 | CN | | Pyramid prism used to reflect the beam | 410 |
| Aug 01 2020 | CN | | widely used LiTaO3 crystal lens | 409 |
| Aug 01 2020 | CN | | Optical dove prism for image rotation | 409 |
| never | CN | | Window | 397 |
| Aug 01 2020 | CN | | Meniscus cylindrical lenses to increase NA system | 392 |
| Aug 01 2020 | CN | | dome lens/hemisphere dome for underwater camera | 385 |
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