CREG sets sights overseas

Railway engineering equipment firm plans global network of service centers

A team of technical engineers dressed in orange jumpsuits and yellow helmets have been carrying out testing on a giant new tunnel boring machine in Henan province's capital Zhengzhou.

The huge structure, used to dig tunnels for underground railways and mining projects, is almost the same length as a three-wagon train. The machine, colloquially known as a "mole" in the construction industry, is cylindrical with metal cutters at its front designed to slice through the hardest rock.