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DETAIL |
25mm/28mm/30mm/34.5mm/35mm/50mm/65mm/71mm/78mm flat glass lenses
1) material : high borosiliate 3.3
2) Light transmittance : above 95%
3) edge thickness : 4mm
4) working temperature : -50-550 degree
5) application : can be used for spotlight, underwater and so on