Tongyi Group was established in 1997, since the establishment of the company, has been "good faith compliance, quality assurance, safety first" principle, the company's main business areas including roads, bridges, tunnels, traffic engineering, municipal engineering construction, housing construction, Large-scale shopping malls, thermal power stations and technology development and consulting, testing and testing and other related auxiliary industries. The company has the qualification of general contract of highway construction, first class qualification of subgrade, pavement, bridge, tunnel and earthwork engineering, It has passed the QEOHS certification and is capable of undertaking all kinds of construction projects including domestic and international highways, municipalities, bridges, reservoirs, power stations, buildings, environmental protection and mining.