Computer Aid Design
Address: No.16 West 4th－Ring Mid Road, Haidian
District, Beijing
Zip code： 100036
Tel：+86-10-51862188
Fax：+86-10-63984785
Website：sddajy.cn
Head Office：No. 16-5 Xisihuan Zhonglu, Haidian District, Beijing 100038, China
International Business System：15 First Area, Fangchengyuan, Fengtai District, Beijing 100078, China