A4 Joint Stock Company Address: 06 Ba, Huyen Thanh Quan, Dong My Ward, Dong Hoi City, Quang Binh Province Enterprise code: 3100405414 Phone: 02323850628 Representative: Bui Ngoc Anh Adress: Xuan Ninh, Xuan Ninh Commune, Quang Ninh District, Quang Binh Province Dong My Ward, Dong Hoi City, Quang Binh ProvinceFounding date: 1 - 2 - 2008