On June 15, a ship carrying a Chinese "mole" left Tianjin for Lisbon, Portugal. Designed and made in China, the tunnel boring machine (#TBM) was bought by the Western European country for a drainage project in Lisbon. It took less than two decades for China to become the world's largest TBM manufacturer and supplier, from a country totally dependent on imported TBMs. #CreatedinChina How does a TBM work and how is it made? Let's join Yegor Shyshov at the world's biggest TBM production base in Cha

The working principle of a shield tunneling machine | Bones Skull