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Linhe,changchun,jilin,China China
联系人 Ms. haibo wang
办公地址 Linhe, changchun, jilin
* Material:Bk7 A glass, Quartz, CaF2 or crystals.* Focal length:0.1%* Dia:0.01_0.1mm* Center thickness tolerance:+/_0.01mm* Centration:1Arc minutes* F
Mount thread: 62mm Front filter thread thread: 82mm 0.45X AF digital wide angle lens with Macro High-index/low-dispersion optical glass Anti-refle
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