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Shandong Yanggu Constant Crystal Optics,Inc was established in April 2006,located in Xiangguang economic development zone ,Yanggu County,Shandong Province. We are specialized in researching ,producing and saling optics and optical components. Our main products include optical window,prism ,lens ,beamsplitter ,filter ,wedge ,blanks and etc .We also provide customized service according to customer’s requests

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