The business of CCCC Third Bureau covers the construction and consultation of civil engineering projects such as highways, railways, housing construction, bridges, tunnels and municipal public works. The headquarters of the company has the special qualification of highway engineering general contracting, the first qualification of municipal public engineering general contracting, the third qualification of housing construction general contracting, and the first qualification of professional contracting of highway subgrade, highway pavement, bridge engineering, tunnel engineering and earthwork engineering, and has passed the integration of quality, environment and occupational health and safety.