Dau Tu Thuong Mai Va Xay Dung Khanh Ngan LTD Address: Chao Hamlet, Son Dong Commune, Son Dong District, Bac Giang Province Enterprise code: 2401064646 Phone: 0378728398; 0035370460 Representative: Nong Van Thiet Son Dong District, Bac Ninh ProvinceFounding date: 16 - 3 - 2026