Trung Tam Gdtx-Day Nghe Huyen Lang Giang Address: Voi Town, Lang Giang District, Bac Giang Province Enterprise code: 2400469086 Phone: 02043881049 Adress: Lang Giang District, Bac Giang Province Voi Town, Lang Giang District, Bac Giang ProvinceFounding date: 3 - 7 - 2009