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| Guangzhou China |
| Addr：Rm.3003 ,TianYu Business Building ,753 DongFengDong Rd. ,Guangzhou P.R. China 510080 |
| Tel：（0086）-020-37885158 |
| Fax：（0086）-020-37885159 |
| PostCode：510080 |
Shanghai China
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| Addr：Rm.1006, Yin Hai Building, No. 15Lane 98Bixiu Rd., Shanghai P. R. China |
| Tel：（0086）-021-54131403 54179817 |
| Fax：（0086）-020-54176785 |
| PostCode： 201100 |
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| E-Mail：rdx@roundex.com.cn |
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