Dear Mr sir/miss:Changchun Shuangsheng Optics Co.,ltd is a Changchun Shuangsheng Optics Co.,ltd of China.Our company is good at manufacture lens, such as plano-convex lens, plano-concave lens, biconvex lens, biconcave lens, meniscus lens, veneer lens(achromatic lens),plate lens, magnifier, reflect lens, windows an so on. The other optical element of our company are prism, cylindrical lens, spherical lens, aspherical lens, polarize lens, waveplates, filters and so on. All the materials are all wool and a yard wide optical glass and optical crystal. The best SURF can get to 10-5, the surface precision can get to 1/20-1/50, the size can get to 1.5mm-100mm,and also can coating all kinds of optical devices. Currently, we have four greatest spectrum: telescope, riflescope, camera lens, board lens, pinhole lens, refraction examine instrument and more than one hundred and seventy species such as zoom lens, viewfinder, WYFD anti-icing fluid an cell liquid checking instrument and hand-saccharometer. Our factory designs light, machine, electricity incorporate CCD lens, computer absorb image caput, fingerprint pick up instrument of the three greatest spectrum high-tech product independently for leading product of my factory. Far-sell to Japan, America, Taiwan, Southeast Asia and etc. Welcome overseas cooperate with our company and develop new optical product together. The wish dose your cooperate the colleague faithfully.best regards! LillianContact Name : Meiling QinTEL : 86-431-82843885FAX : 86-431-82843885MSN: xxxxxE-mail: xxxxxQQ: 654453342Homepage: http://xxxxx http://xxxxx/member/com/ http://xxxxx/Postcode: 130041Address: No.1 Dongdaqiao street, Nanguan area, Changchun, Jilin China