Steel structure is mainly made of steel and steel plate, steel column, steel truss girder artifacts, such as weld is required between each components or parts, bolt, or rivet connection.Because of its weight is lighter, and the construction is simple, widely used in large factories, stadiums, high-rise, and other fields.

With the progress of science and technology and the continuous expansion of production scale of highway construction, the status and role of mechanical equipment in engineering construction is becoming increasingly important. In a sense, construction machinery plays a decisive role in road construction. Therefore, the procurement of construction machinery has become an important task of construction enterprises.

Precision machining involving precision machining, precision metal stamping, precision die casting, assembly, tooling and fixture and other related equipment and products processing, assembly, testing.

In the wave of new technology in the world today, while the information industry, life sciences and nanotechnology are developing at an alarming rate, they are all energy-based. Energy on the world economy is still the first. The classification can be summarized as wind, water, heat, photovoltaic, nuclear energy.