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Personne àcontacter Ms. rebecca
ShenZhen Street 1-1, Changchun, Jilin
Material BK7 or other optical materials *Dimension Tolerance *0.0~*0.1mm *Center Thickness +/*0.1mm *Focal Length Tolerance+/*1% *Surface Quality:*0/*0 *Surface Figure λ/2 at **3nm on plano side *Clear Aperture >*0% *Chamfer 0.*5mm at *5 degree typical *Coating Optional
