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最小订单:
50
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联系人 Ms. haibo
Linhe, changchun, jilin
* Material:Bk7 A glass, Quartz, CaF2 or crystals.* Focal length:0.1%* Dia:0.*1_0.1mm* Center thickness tolerance:+/_0.*1mm* Centration:1Arc minutes* Fringes:**3* Irregularity of fringes:0.**0.3* Surface quality:****0 stratch/dig* Clear Apenture:*0%* Bevel:0.*5mm**5degree* Coating:no or AR Bi-concave lenses * Material:Bk7 A glass, Quartz, CaF2 or crystals.* Focal length:+/_0.1%* Dia:0.***0.1mm* Center thickness tolerance:+/_0.*1mm* Centration:1Arc minutes* Fringes:**3* Irregularity of fringes:0.**0.3* Surface quality:****0 stratch/dig* Clear Apenture:*0%* Bevel:0.*5mm**5degree* Coating:no or AR
