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Sun Zhongming was born in 1938. He became a member of Beijing General Research Institute of Mining and Metallurgy(BGRIMM)upon graduation from. Northeast Institute of Technology in 1962. He is now a senior engineer
Sun Zhongming was born in 1938. He became a member of Beijing General Research Institute of Mining and Metallurgy (BGRIMM) upon graduation from. Northeast Institute of Technology in 1962. He is now a senior engineer