On November 21, Daquan Energy announced that for personal reasons
, Zhao Yunsong, the company's core technician, applied for resignation and no longer held any position in the company. In May
2007, Zhao Yunsong joined Daqo Energy, and successively served as the director of the rectification workshop, the deputy general manager of the subsidiary company and the manager of Daqo Energy Technology Department.
On June 16, Tan Zhongfang, the company's core technical staff and deputy general manager, resigned from all positions. On August 5, Mr. Zhang Longgen, the director, and Zhou Qiangmin, the director and general manager, resigned.