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After sales service
Contact us
Telephone：86-10-58677289   4008-100-128
Fax：86-10-58677181
Email：med@bttco.com.cn
Address: Rm2909, NO.1 Building, Jia NO.6 ShuGuangXiLi, Chaoyang District, Beijing
After sales service center
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Address: Rm2902, NO.1 Building, Jia NO.6 ShuGuangXiLi, Chaoyang District, Beijing
Contacts：miss Yin
Telephone: 4008-100-128
                    86-10-58677289   or   86-10-58677567
Fax: 86-10-58677289-291