Thien Son Joint Stock Company Address: Pa Nha E10, Thanh Xuan Bac Town, Thanh Xuan District, Ha Noi City Enterprise code: 0100839430 Phone: 0248586632 Representative: Nguyen The Quang Adress: 1B Nha 25 Tap The Yen Lang, Dong Da District, Ha Noi City Thanh Xuan District, Ha Noi CityFounding date: 13 - 3 - 1999