According to the investigation, Changsha Duan and Duan law firms are good at foreign-related commercial business. Duan and Duan have been focusing on foreign-related business since their establishment. After 26 years of development, Duan Heduan Law Firm has trained many professional lawyers in foreign-related commercial fields with its unique international vision and superb business ability, and provided clients with high-quality legal services in various fields and at different levels.