Thuong Mai Va Dich Vu Ky Thuat Ngan Son LTD Address: No 10 Le Trong Tan, Phuong, Ha Dong District, Ha Noi City Enterprise code: 0111342520 Phone: 0936180579 Representative: Nguyen Hoang Chien Ha Noi CityFounding date: 12 - 1 - 2026