Phong Tai Nguyen Va Moi Truong Huyen Tien Yen Address: Dong Tien I, Tien Yen Town, Tien Yen Town, Tien Yen District, Quang Ninh Province Enterprise code: 5700928628 Phone: 0203876343 Adress: Dong Tien I, Tien Yen Town, Tien Yen Town, Tien Yen District, Quang Ninh Province Tien Yen Town, Tien Yen District, Quang Ninh ProvinceFounding date: 8 - 9 - 2008