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Sandaogou Mine
22m of reinforced retaining wall, underground raw coal surge bunker were used in design for the first time in Chinese coal industry.

China Coal Technology & Engineering Group Beijing Huayu Engineering Company 
Add£º67#, Ande Road, Xicheng District, Beijing, PRC.
Tel£º+86-10-82277418   Post code £º100120   Mailbox:hygjywb@vip.126.com