Cong Nghe - Ky Thuat Woltan LTD Address: 317B, Bach Mai Street, Bach Mai Ward, Hai Ba Trung District, Ha Noi City Enterprise code: 0109880377 Phone: 0877060128 Representative: Do Thi Lien Bach Mai Ward, Hai Ba Trung District, Ha Noi CityFounding date: 7 - 1 - 2022