Ky Nghe Cao A Chau Joint Stock Company Address: No 15B, 53 Hoang Cau Lane, O Cho Dua Ward, Dong Da District, Ha Noi City Enterprise code: 0105854721 Phone: 02435134978 Representative: Trinh Xuan Quy Adress: 169B Ngoc Khanh, Ngoc Khanh Ward, Ba Dinh District, Ha Noi City O Cho Dua Ward, Dong Da District, Ha Noi CityFounding date: 16 - 4 - 2012