Huyen Doan Tien Yen Address: Quang Trung Street, Tien Yen Town, Tien Yen District, Quang Ninh Province Enterprise code: 5700962026 Phone: 02033876267 Adress: Tien Yen District, Quang Ninh Province Tien Yen Town, Tien Yen District, Quang Ninh ProvinceFounding date: 3 - 11 - 2008