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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/