Around 2008, under the impetus of Beijing Olympic Games, a boom of steel structure buildings emerged in China, and the demand for steel structure increased significantly, with a large number of steel structure venues, airports, stations and high-rise buildings coming up one after another. Now, under the advocacy of carbon peak and carbon neutral policy, steel structure building is once again valued, and even regarded as "the best form of green building" by domestic experts.

The strength of steel is higher than traditional brick and concrete structures. Steel structure buildings are also much stronger than a traditional wood structures. So, it can build more structures higher than traditional building materials.

It is often heard that purlins, C-shaped steel, Z-shaped steel, and CZ-shaped steel are mentioned. In fact, they include C-shaped steel and Z-shaped steel, but both C-shaped steel and Z-shaped steel perform better than traditional steel products in practical applications.