Dau Tu Va Phat Trien Giao Duc Happy Smile Joint Stock Company Address: PG01-15, Vincom Tran Phu Urban Area, Tran Phu Ward, Ha Giang City, Ha Giang Province Enterprise code: 5100497923 Phone: 0888888323 Representative: Nguyen Thanh Binh Tran Phu Ward, Ha Giang City, Ha Giang ProvinceFounding date: 29 - 2 - 2024