ʻOihana ʻo Beijing Jeffoptics Limited
Wahi noho
Lumi 225, 2 / F, Hale Hana, Beijing Bona Electric Co., Ltd., alanui kōkua G6, ʻĀpana ʻo Changping, Beijing, 102208, PRC.
Leka uila
Kelepona
+86-10-62073731
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