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Address:Room 1803 of HuaZun Mansion of Xicheng District Beisanhuan Middle Road A No. 29 China, Beijing (the northeast corner of Madian Qiao) Post code: 100029 Tel: 0086-10-62026868 62028228 Fax: 0086-10-62023838 E-mail：info@bestan.com.cn
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