Ding Yumei, born in 1964, is a member of Communist Party of China. In 1987, she graduated from Beijing university , majoring in polymer material processing machinery, with a bachelor's degree. In 1990, she got her master's degree in Beijing university , majoring in chemical process machinery. Her main research areas are stiffness analysis and structural optimization of injection moulding machine and mold closing machine . In 1992, she was promoted to lecturer in the School of Mechanical Engineering, Beijing Union University, In 2000, he was promoted to associate research fellow in Institute of Plastic Machinery and Plastic Engineering, Beijing University of Chemical Technology. She has undertaken one key project of the Beijing Natural Science Foundation, one key project of the National Science and Technology Support Program, one project of the Beijing Natural Science Foundation, two cooperative R & D projects with enterprises. As the main participant in these projects, she was awarded one second prize of National Science and Technology Progress and two provincial and ministerial prizes of Science and Technology. She has applied for 59 invention patents (9 authorized), 46 utility model patents (37 authorized). And she has published nearly 30 papers in academic journals.