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No18 TaiXing Avenue,Chengdu,Sichuan,China China
Plano-convex lensis an optical lens in which one side of the lens is flat and the other side is convex. The focal length of plano-convex is positive,
A sphere is defined by a single radius of curvature. Aspheric Lenshave at least one aspherical surface. Optical engineers generally think of aspheric
الشخص الذي يمكن الاتصال به Hanter Xia
عنوان No18 TaiXing Avenue, Chengdu, Sichuan
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