Duc Hanh Joint Stock Company Address: Quyet Tien Hamlet, Vinh Tuy Town, Bac Quang District, Ha Giang Province Enterprise code: 5100318878 Phone: 02193824715 Representative: Vu Van Hanh Adress: Yen The Town, Luc Yen District, Yen Bai Province Vinh Tuy Town, Bac Quang District, Ha Giang ProvinceFounding date: 15 - 3 - 2010