Trung Tam Thong Tin Va Dich Vu Doi Ngoai Address: No 06, Hung Vuong Street, Chi Lang Ward, Lang Son City, Lang Son Province Enterprise code: 4900783791 Phone: 02053896899 Representative: Hoang Anh Tuan Chi Lang Ward, Lang Son City, Lang Son ProvinceFounding date: 10 - 8 - 2015