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    • Changchun Effort Technology Co., Ltd.

    Changchun Effort Technology Co.,Ltd was a professional mannufacture of optics in the world.Our company based Jin Lin Province,Changchun City, which is orginal Institute Of Optics, Fine Mechanics And Physics Chinese Academy Sciences,the biggest Sciences China. Our experienced engineers ...
    Telephone: 86-431-89127076 Address:Donglingnan Street
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