From 2000 to 2004, he participated in the second-party audit and certification of foreign economic assistance projects organized by the Ministry of Commerce (the former Ministry of foreign trade and economic cooperation), participated in the preparation of the second-party audit standards and Implementation Rules for foreign economic assistance projects, and made contributions to China Offshore Engineering Corporation, China complete equipment import and Export Corporation, China Road and bridge construction group, Overseas Department of Shanghai Construction Engineering Group The overseas personnel of economic assistance projects undertaken by more than 30 enterprises, such as Jiangsu International Economic and Technical Cooperation Corporation and Anhui foreign economic construction group, carried out quality management system training, interview of foreign technical team, audit of domestic logistics team, on-site quality acceptance of engineering projects and audit of management system.

Since 2001, he has been engaged in certification and audit of quality, environment, occupational health and safety management system, construction and acceptance of safety production standardization, management system and engineering management training, and safety production training for nearly 20 years.

He has been an excellent auditor of China Construction Association Certification Center for many years, and has participated in the certification and audit of management system of more than 800 large state-owned enterprises, construction enterprises and military enterprises.