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east 117.13
west 117.07
south  40.63
north  41.00
Service information
contacts:
phone:
010-58991325
mailbox:
quanquan78430@163.com
Contact information
contributors:
Shi Qingfeng , Pu Weiwei
author:
Quan Weijun , Min Yu Fang
manager:
Quan Weijun , Shi Qingfeng