Kien Truc Hien Studio LTD Address: SN172, De Tham 2 Civil Group, Thuc Phan Ward, Cao Bang City, Cao Bang Province Enterprise code: 4800953707 Phone: 0343327999 Representative: Duong Mac Thuy Ngan Thuc Phan Ward, Hoa An District, Cao Bang ProvinceFounding date: 16 - 4 - 2026