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010-61271107
| Add： | NO.18 Keyuan Road,Daxing Industry Developing Zone Daxing District Beijing China |
| Fax： | 010-67164291 |
| Email： | [email protected] |
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Beijing Tongsheng Shidai Biotech Co.，Ltd
Web.: www.ddtco.cn
Tel.: 400 990 5866