Lam San Thanh Son Joint Stock Company Address: Bong Buoi Hamlet, Xuan Ai Commune, Van Yen District, Yen Bai Province Enterprise code: 5200406172 Phone: 02384515139 Representative: Nguyen Duc Thanh Adress: Ninh Phuc Hamlet, Nga Quan Commune, Tran Yen District, Yen Bai Province Xuan Ai Commune, Van Yen District, Yen Bai ProvinceFounding date: 10 - 6 - 2009