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      Jiefeng Gao, male, was born in 1982. He is a doctor of engineering, an associate professor anddoctoral supervisor in Yangzhou University. In July 2006, he graduated from the School of Polymer Science and Engineering of Sichuan University, majoring in polymer science and engineering. In July 2009, he graduated from the School of Polymer Science and Engineering of Sichuan University, majoring in material processing engineering, and being taught under Professor Zhongming Li. In September 2012, he... more..>>