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| 1. [China] | | With its quality system ISO 9001 certified, the main productions are cylindrical lens, achromatic doublet lens, spherical lens, window, prism, mirror and wedge from flint glass, UV-grade fused silica,... | | |
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| 2. [China] | | With its quality system ISO 9001 certified, the main productions are cylindrical lens, achromatic doublet lens, spherical lens, window, prism, mirror and wedge from flint glass, UV-grade fused silica,... | | |
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