198701-199112 assistant engineer of highway company, engineer and deputy director of enterprise-run research institute.
199201-199712 deputy section chief of technical department of highway company and chief engineer of Guangdong Gaoshui Highway, Guangxi Guilin Airport Expressway and Harbin-Dalian Expressway.
199801-199812 deputy director of foreign engineering development department of highway company.
19901-199912 chief of technical department of highway company and chief engineer of Changyu expressway construction project.
20001—200208 Technical Minister and Director of Technical Quality Department of Luqiao Company.
200208 —— Currently Deputy Chief Engineer of Luqiao Company.