Khai Khoang Nam Viet Joint Stock Company Address: Civil Group 2, Huong Son Town, Phu Binh District, Thai Nguyen Province Enterprise code: 4601126205 Phone: 0912500988 Representative: Ha Van Huong Adress: Vai Hamlet, Hoa Thuong Commune, Dong Hy District, Thai Nguyen Province Huong Son Town, Phu Binh District, Thai Nguyen ProvinceFounding date: 24 - 4 - 2013