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Beijing GTT Telecom Technologies Co., Ltd. All Rights Reserved 京 ICP 备 05032748 License No. 1101082574833

Address: New Materials Building, Block B 1F, Fenghui Mid Road 7#, Haidian District, Beijing  Tel : 010-58714781 Fax :010-58711992 

Sale and Technical support hotline: 400-818-8781