Project: exploiting Dai Son quarry - Yen Bai By em Duyên, 23/03/2022 Dai Son Quarry Location: Doan Ket hamlet, Dai Son Commune, Van Yen District, Yen Bai Province Estimated reserve: 3,000,000 m3 Estimated value: 2000 billion VND Chia sẻ: Featured Posts