Dear Mr. /Ms.: We are Changchun Shuangsheng Optics Co.,ltd of China. The optical fitting device of our company are veneer lens, meniscus lens, plano-convex lens, plano-concave lens, bi-convex lens, bi- concave lens, prism, plate lens, spherical lens, aspherical lens, cylindrical lens, aspherical cylindrical lens, reflect lens, filter lens, polarize lens, wave lens and so on. All the materials are all wool and a yard wide optical glass and optical crystal. |
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