Location：| Name： | CHANGGEN YAN | Title： | Instructor |
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| Email： | yanchanggen@163.com | Postcode： | 710064 | |
| Member Type： | 普通会员 | |||
| Company： | Chang’an Geotechnique & Tunnel Engnieering Department of Highway School, | |||
| Address： | Xi’an ,Shanxi Provinee | |||
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