Ky Thuat Vertex Joint Stock Company Address: No 9, Alley 26, 110 Nam Du Lane, Civil Group 21, Vinh Hung Ward, Ha Noi Town, Viet Nam, Ha Noi City Enterprise code: 0111611325 Phone: 0399139026 Representative: Nguyen Ngoc Quynh Vinh Hung Ward, Hai Ba Trung District, Ha Noi CityFounding date: 19 - 8 - 2026