Xi Mang Va Khoang San Yen Bai Joint Stock Company Address: Civil Group 16, Yen Binh Town, Yen Binh District, Yen Bai Province Enterprise code: 5200819613 Phone: 02163888515 Yen Binh Town, Yen Binh District, Yen Bai ProvinceFounding date: 23 - 4 - 2015