On the morning of the 20th, the signing ceremony for the new lithium battery ceramic material project of the team of the Nancewen Academician of Tsinghua University was held in Jixian County Mayor Cai Lixin, member of the Standing Committee of the Municipal Party Committee and Minister of Organization Department Li Wei, Dean of the Materials Research Institute of Tsinghua University, Nan Cewen, Academician of the Chinese Academy of Sciences, and Feng Yuchuan, Chairman of Jiangsu Qingtao Energy Technology Co.