Tu Van Khao Sat Va Do Dac An Khanh LTD Address: No 9, Lane 51, Phuc An 2 Hamlet, Tam Hiep 2 Hamlet, Hat Mon Commune, Phuc Tho District, Ha Noi City Enterprise code: 0111409140 Phone: 0974088588 Representative: Nguyen Cao The Hat Mon Commune, Phuc Tho District, Ha Noi CityFounding date: 12 - 3 - 2026