Dao Tao Cung Ung Lao Dong Ngoc Khanh Joint Stock Company Address: No 87 Nguyen Thai Hoc, Le Loi Ward, Vinh City, Nghe An Province Enterprise code: 2900671597 Phone: 02158585508 Le Loi Ward, Vinh City, Nghe An ProvinceFounding date: 7 - 7 - 2005