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Danyang Bosen Optical Co., Ltd
Danyang Bosen Optical Co., Ltd
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    progressive lens

    progressive lens

    Quantity Order:

    Specification :

    Cr-39 1.499 progressive lens
    1. diameter 70mm
    2. long corridor:17mm
    Short corrider: 14mm
    3. abble value: 58
    4. transimission: over the 98%
    5 Specific gravity:1.32
    6. Abrasion resistance:6/8H
    7. Reflective index:1.50

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