Khao Sat Va Do Dac Ha Dong - Chi Nhanh Thang Long Joint Stock Company Address: No 2, Lane 2, Cluster 2, O Dien Commune, Dan Phuong District, Ha Noi City Enterprise code: 0104228739-076 Phone: 0966497538 Representative: Nguyen Trach Hoi Dan Phuong District, Ha Noi CityFounding date: 12 - 3 - 2026