Duy Long LTD Address: Vang Hamlet, Bich Son, Viet Yen District, Bac Giang Province Enterprise code: 2400352546 Phone: 02144674019 Representative: Nguyen Quoc Hung Adress: Vang Hamlet, Bich Son, Viet Yen District, Bac Giang Province Bich Son Commune, Viet Yen District, Bac Giang ProvinceFounding date: 3 - 4 - 2006