Phat Trien Giao Duc Trong Tin Joint Stock Company Address: No 15a, Lane 533, Ba Trieu Street, Khoi 9, Dong Kinh Ward, Lang Son City, Lang Son Province Enterprise code: 4900917903 Phone: 0949668855 Representative: Hoang Minh Giang Dong Kinh Ward, Lang Son City, Lang Son ProvinceFounding date: 13 - 1 - 2025