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E-Mail: qingxia.gong@yuying-sd.com may@yuying-sd.com yuyingfresnellens@gmail.com
Has been focusing on the development and production of Fresnel lenses
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Shandong Yuying optical instrument VR panoramic promotional film
Shandong Yuying optical instrument VR panoramic promotional film
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28th anniversary of Shandong Yuying optical instrument
28th anniversary of Shandong Yuying optical instrument
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Network signing ceremony of Shandong Yuying Canton Fair
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