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        Model:57NA
        1. Material: Optical glass (high borosilicate, K9, BK7, BK270)
        2. Light transmission: 95% (97% after coating)
        3. Refractive index: 1.474
        4. Operating temperature: -50-500 degrees
        5. Size introduction: External diameter: 55.6mm, Internal: 50.5mm, Height: 18.2mm, Steps: 3mm
        6. Light angle:110*60
        Model:64-5
        1. Material: Optical glass (high borosilicate, K9, BK7, BK270)
        2. Light transmission: 95% (97% after coating)
        3. Refractive index: 1.474
        4. Operating temperature: -50-500 degrees
        5. Size introduction: External diameter: 64mm, Internal: 46.1mm, Height: 21mm, Steps: 3mm
        6. Light angle: 125 x 70 polar street light lens
        Model:65-3
        1. Material: Optical glass (high borosilicate, K9, BK7, BK270)
        2. Light transmission: 95% (97% after coating)
        3. Refractive index: 1.474
        4. Operating temperature: -50-500 degrees
        5. Size introduction: Externa: 64mm, Internal: 55.27mm, Height: 20.43mm, Steps: 3mm
        6. Light angle:100*60
        Model:66-7
        1. Material: Optical glass (high borosilicate, K9, BK7, BK270)
        2. Light transmission: 95% (97% after coating)
        3. Refractive index: 1.474
        4. Operating temperature: -50-500 degrees
        5. Size introduction: External: 66mm, Internal: 61.65mm, Height: 24.4mm, Steps: 3.5mm
        6. Light angle:130*85
        Model:72-10
        1. Material: Optical glass (high borosilicate, K9, BK7, BK270)
        2. Light transmission: 95% (97% after coating)
        3. Refractive index: 1.474
        4. Operating temperature: -50-500 degrees
        5. Size introduction: External diameter: 72mm, Height: 25.6mm, Steps: 3.5mm
        6. Light angle: 110 x 60
        Model:78-17
        1. Material: Optical glass (high borosilicate, K9, BK7, BK270)
        2. Light transmission: 95% (97% after coating)
        3. Refractive index: 1.474
        4. Operating temperature: -50-500 degrees
        5. Size introduction: External diameter: 78mm, Internal: 58.81mm, Height: 30mm, Steps:4mm
        6. Light angle:125*80
        Model:84NA
        1. Material: Optical glass (high borosilicate, K9, BK7, BK270)
        2. Light transmission: 95% (97% after coating)
        3. Refractive index: 1.474
        4. Operating temperature: -50-500 degrees
        5. Size introduction: External diameter: 86mm, Height: 30.3mm, Steps: 3.2mm
        6. Light angle: 110 x 50 short-range projection
        Model:90-3-2
        1. Material: Optical glass (high borosilicate, K9, BK7, BK270)
        2. Light transmission: 95% (97% after coating)
        3. Refractive index: 1.474
        4. Operating temperature: -50-500 degrees
        5. Size introduction: External diameter: 90.2mm, Height: 36.15mm, Steps: 5mm
        6. Light angle: 116 x 56 short-range projection
        Model:92-2
        1. Material: Optical glass (high borosilicate, K9, BK7, BK270)
        2. Light transmission: 95% (97% after coating)
        3. Refractive index: 1.474
        4. Operating temperature: -50-500 degrees 5. Size introduction: External diameter: 92mm, Height: 25.92mm, Steps: 4mm
        6. Light angle: 142 x 80
        Model:92-2-6
        1. Material: Optical glass (high borosilicate, K9, BK7, BK270)
        2. Light transmission: 95% (97% after coating)
        3. Refractive index: 1.474
        4. Operating temperature: -50-500 degrees
        5. Size introduction: External diameter: 92mm, Height: 25.92mm, Steps: 4mm
        6. Light angle: 140 x 70 anti-glare
        Model:92-13
        1. Material: Optical glass (high borosilicate, K9, BK7, BK270)
        2. Light transmission: 95% (97% after coating)
        3. Refractive index: 1.474
        4. Operating temperature: -50-500 degrees
        5. Size introduction: External diameter: 92.1mm, Height: 32mm, Steps: 4.8mm
        6. Light angle: 130 x 52 polar lens
        Model:107-2
        1. Material: Optical glass (high borosilicate, K9, BK7, BK270)
        2. Light transmission: 95% (97% after coating)
        3. Refractive index: 1.474
        4. Operating temperature: -50-500 degrees
        5. Size introduction: External diameter: 106.6mm, Height: 31.78mm, Steps: 3.5mm
        6. Light angle: 110 x 65
        Model:107-7
        1. Material: Optical glass (high borosilicate, K9, BK7, BK270)
        2. Light transmission: 95% (97% after coating)
        3. Refractive index: 1.474
        4. Operating temperature: -50-500 degrees
        5. Size introduction: External diameter: 106.6mm, Height: 31mm, Steps: 3.5mm
        6. Light angle: 120 x 55 polar lens
        Model:107-11
        1. Material: Optical glass (high borosilicate, K9, BK7, BK270)
        2. Light transmission: 95% (97% after coating)
        3. Refractive index: 1.474
        4. Operating temperature: -50-500 degrees
        5. Size introduction: External diameter: 106.6mm, Height: 29mm, Steps: 3.5mm
        6. Light angle: 160 x 120 long-range projection
        Model:110
        1. Material: Optical glass (high borosilicate, K9, BK7, BK270)
        2. Light transmission: 95% (97% after coating)
        3. Refractive index: 1.474
        4. Operating temperature: -50-500 degrees
        5. Size introduction: External diameter: 106.6mm, Height: 32.86mm, Steps: 3.5mm
        6. Light angle: 130 x 60
        Model:110-27
        1. Material: Optical glass (high borosilicate, K9, BK7, BK270)
        2. Light transmission: 95% (97% after coating)
        3. Refractive index: 1.474
        4. Operating temperature: -50-500 degrees
        5. Size introduction: External diameter: 106.6mm, Height: 32.86mm, Steps: 3.5mm
        6. Light angle: 114 x 58
        1. Material: Optical glass (high borosilicate, K9, BK7, BK270) 2. Light transmission: 95% (97% after coating) 3. Refractive index: 1.474
        4. Operating temperature: -50-500 degrees
        5. Size introduction: Length: 72mm, Width:39mm, Height: 26mm, Steps: 4mm
        6. Light angle: 110 x 60 7. Suitable range: outdoor lighting, high bay lights, tunnel lights, etc.
        Model:49-4
        1. Material: Optical glass (high borosilicate, K9, BK7, BK270)
        2. Light transmission: 95% (97% after coating)
        3. Refractive index: 1.474
        4. Operating temperature: -50-500 degrees
        5. Size introduction: External diameter: 49mm, Height: 23.4mm, Steps: 3.5mm
        6. Light angle: 70°
        Model:50-21
        1. Material: Optical glass (high borosilicate, K9, BK7, BK270)
        2. Light transmission: 95% (97% after coating)
        3. Refractive index: 1.474
        4. Operating temperature: -50-500 degrees
        5. Size introduction: External: 49.5mm, Internal: 46.2mm, Height: 18.32mm, Steps: 2.5mm
        6. Light Angle:60°
        Model:50-49
        1. Material: Optical glass (high borosilicate, K9, BK7, BK270)
        2. Light transmission: 95% (97% after coating)
        3. Refractive index: 1.474
        4. Operating temperature: -50-500 degrees
        5. Size introduction: External diameter: 50mm, Internal: 48.5mm, Height: 28mm, Steps: 4mm
        6. Light angle: 40°
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