Phat Trien Cong Nghe Tin Hoc Son Phong LTD Address: Ngoai Hamlet, Cao Xa Commune, Tan Yen District, Bac Giang Province Enterprise code: 2400942721 Phone: 0973221285 Representative: Bui Van Son Cao Xa Commune, Tan Yen District, Bac Giang ProvinceFounding date: 19 - 7 - 2022