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Negative focal length

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China Negative focal length pmma material fresnel lens ,spot fresnel lens for product decoration factory

Negative focal length pmma material fresnel lens ,spot fresnel lens for product decoration

Negative focal length pmma material fresnel lens ,spot fresnel lens for product decoration Product name Fresnel lens Focal length -350 or -750mm Diameter OD 230 mm Groove pitch 0.3mm Thickness 2mm Application ... Read More
2019-11-29 00:10:30
China Round shape pmma material negative focal length fresnel lens for indoor exhibition factory

Round shape pmma material negative focal length fresnel lens for indoor exhibition

Round shape pmma material negative focal length fresnel lens for indoor exhibition Product name Fresnel lens Focal length -350 or -750mm Diameter OD 230 mm Groove pitch 0.3mm Thickness 2mm Application for ... Read More
2019-06-25 01:28:13
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