Do Dac Va Khao Sat Vinh Yen Joint Stock Company Address: No 52a, Tran Quoc Tuan Street, Ngo Quyen Ward, Vinh Yen City, Vinh Phuc Province Enterprise code: 2500410343 Phone: 02116532000 Representative: Le Thi Hao Adress: Lac Trung Hamlet, Binh Duong Commune, Vinh Tuong District, Vinh Phuc Province Ngo Quyen Ward, Vinh Yen City, Vinh Phuc ProvinceFounding date: 28 - 7 - 2010