The shield machine is a heavy mechanical equipment used for tunnel excavation and is known as the "weapon of underground engineering."

China's shield machine technology has made great progress in the past decade and has successfully broken the foreign technology monopoly. China's independently developed ultra-large diameter shield machine "Tianhe" is one of the most advanced shield machines in the world, featuring high efficiency, safety and environmental protection.

It is widely used in the construction of major projects such as subways, high-speed railways, and water conservancy projects. For example, in projects such as the Beijing subway and the Dalian undersea tunnel, the performance of Chinese-made shield machines is particularly outstanding.

These applications not only demonstrate the outstanding performance of China's shield machines, but also provide strong technical support for underground engineering construction in China and abroad .

As China's shield machine technology matures and is promoted, more and more countries are beginning to purchase and use shield machines made in China, which not only brings rich economic returns to Chinese companies, but also improves China's position in the international engineering machinery market.