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Address：273#, No.85, Hui Long Guan west street, Changping District, Beijing, R.P. China.
Tel：+86 10-57536875 ext.801
Fax：+86 10-57536875 ext.802
Mobile：+86 13911581823
E-mail：dmrh@foxmail.com
web：http://www.dmrh.com.cn/En/