Hoang Hai LTD Address: Thach Ban Hamlet, Hung An Commune, Bac Quang District, Ha Giang Province Enterprise code: 5100163529 Phone: 0356988309 Representative: Hoang Ngoc Duy Hung An Commune, Bac Quang District, Ha Giang ProvinceFounding date: 16 - 10 - 2001