Du specializes in defending and representing criminal cases. He has been engaged in criminal defense for more than 20 years. He has rich experience in handling criminal cases and made outstanding achievements. Over the years, he has represented a large number of influential domestic and international cases, including but not limited to the bribery case of Li, the former vice minister of the Ministry of Public Security; the bribery case of Li, the former executive vice mayor of Beijing and vice chairman of the Chinese People’s Political Consultative Conference; the corruption case of Song, the former secretary of the Party Committee and president of China Resources Group; the corruption case of Liu, the former director of the Department of Transportation of Sichuan Province; the bribery case of Zhong, the former vice director of Hebei Provincial Department of Commerce; the corruption case of Cao, the former deputy director of the Office of the Ministry of Human Resources and Social Security of China; the corruption and bribery case of Zhang, the former secretary of the Party Committee of the Cultural Assets Supervision and Administration Office of Beijing Municipality; the bribery case of Zhong, the former deputy director of the State-owned Assets Supervision and Administration Commission of the People’s Government of Beijing Municipality; the bribery case of Zhu, the former assistant to the general manager of State Grid; the distributing privately state-owned assets and bribery case of Zhang, the former general manager of Datang International; the bribery case of Duan, the former president of Huaxia Bank; the bribery and misuse of authority case of Wang, the former chairman of China Credit Trust; the bribery case of Wang, the former director of Hebei Provincial Department of Human Resources and Social Security and his bribery to Wei, the director of the Fifth Office of the CPC Central Commission for Discipline Inspection and Wei’s organization; the bribery case of Li, the former vice governor of Sichuan Province; the bribery case of Wang, the former secretary of the Party Committee of National Bureau of Statistics; the bribery case of Cai, the general manager of Sinochem Group; the extreme fire case (hazardous goods accident case) at the new site of CCTV; the case of profit-making through disseminating obscene materials by Shenzhen Qvod Technology Co. Ltd.; and the first case of electronic bill fraud in China (Financial Vouchers Fraud with a value of RMB 2 billion). All these were substantially complicated criminal cases. In addition, Du also serves as the perennial or special legal counsel of many enterprises and individuals.

Du received the “Award of Outstanding Contribution to Criminal Defense among Beijing Lawyers” issued by Beijing Municipal Bureau of Justice in 2002, and the honor “Top 100 Excellent Criminal Defense Lawyer” from Beijing Lawyers Association in 2011.