Quy Tin Dung Nhan Dan Chang Son Address: Hamlet 2, Chang Son Commune, Chang Son Commune, Thach That District, Ha Noi City Enterprise code: 0500495551 Phone: 683180 Representative: Nguyen Van Thang Adress: Hamlet 6, Chang Son Commune, Thach That District, Ha Noi City Chang Son Commune, Thach That District, Ha Noi CityFounding date: 12 - 6 - 2006