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Shandong Yanggu Constant Crystal Optics, Inc yashinzwe muri Mata 2006, iherereye mu karere ka Xiangguang gashinzwe iterambere ry’ubukungu, Intara ya Yanggu, Intara ya Shandong.Tuzobereye mubushakashatsi, kubyara nosalingIbikoresho bya optique.Ibicuruzwa byacu byingenzi birimo idirishya rya optique, prism, lens, urumuri rwerekana, gushungura, wedge, ubusa n'ibindi .Tutanga kandi serivisi yihariye dukurikije ibyifuzo byabakiriya
