Urban underground construction is a field that FECON is focusing on and dominating in the Vietnamese market. By applying cutting-edge technologies to underground construction works, FECON undertakes deep excavations in soft ground, high-pressure jet grouting, construction of retaining wall systems, TBM operations, and deep pits, creating tunnels and underground spaces for various urban purposes in major cities - such as underground motorways and metro lines, drainage systems, parking lots, shopping malls, fiber optic cable routes, and other underground facilities.