100*100MM Square Fresnel Lens Focal length 50mm,Concentrated amplification,Optical transmittance 90%,magnification 4-5 times

100*100MM Square Fresnel Lens Focal length 50mm,Concentrated amplification,Optical transmittance 90%,magnification 4-5 times

100*100MM Square Fresnel Lens Focal length 90mm,Concentrated amplification,Optical transmittance 90%,magnification 4-5 times

100*100MM Square Fresnel Lens Focal length 90mm,Concentrated amplification,Optical transmittance 90%,magnification 4-5 times

100*100MM Square Fresnel Lens Focal length 90mm,Concentrated amplification,Optical transmittance 90%,magnification 4-5 times

100*100MM Square Fresnel Lens Focal length 90mm,Concentrated amplification,Optical transmittance 90%,magnification 4-5 times

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104*104MM Square Fresnel Lens Focal length 55mm,Concentrated amplification,Optical transmittance 90%,magnification 4-5 times

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