Nanjing Tiechuang Road Engineering Co., Ltd. was established in 2018, the business scope includes: road engineering, housing construction engineering, municipal public engineering, water conservancy engineering, bridge engineering, foundation and foundation engineering, steel structure engineering, environmental protection engineering construction; Production and sales of asphalt, asphalt concrete and cement stabilized gravel; Construction machinery leasing: new materials research and development; Building materials, municipal materials sales. (For projects subject to approval according to law, business activities can only be carried out after approval by relevant departments).