Vinacomin - Viet Bac Mining Industry Holding Corp (VVMI) is a Vietnam-based company primarily engaged in the coal industry. The Company is engaged in both the underground and surface mining of coal, as well as the provision of support services. It is also involved in the trading of construction materials and office leasing. Its coal are sold to thermal power plants and cement manufacturers. Through its subsidiaries, it is engaged in the production of cement and other construction materials, such as stones and clay. The Company is also involved in the manufacturing and maintenance of mechanical equipment and machinery, such as conveyor belts, precast structural steels, steel tracks, steel nets, hoisting and lifting systems and hydraulic machines, among others. Other activities include cement packaging manufacturing; industrial supplies trading; the construction of industrial, commercial and residential properties; hotel operations and tour operations.