Equipment manufacturing shield machine: The northeast is an important old industrial manufacturing base in our country, with a good industrial base, strong scientific research strength and fine investment ecological environment. In recent years, the Group has actively implemented the innovation-driven development strategy and accelerated the construction of a modern innovation system. The Group takes it as its own responsibility to build an international leading comprehensive underground engineering manufacturer. After years of development, it has now become a comprehensive engineering equipment manufacturing group integrating tunnel boring machines, tunnel mechanization special equipment and underground space industry. A great breakthrough has been achieved in the large-diameter shield, rectangular shield, horseshoe-shaped shield, combined shield, and so on. The birth of new product and new method promotes the development of tunnel and underground space in our country. In 2019, the Group established the shield tunneling machine research and development base, focusing on rectangular shield, pipe jacking machine, three-arm rock drilling rig, wet spray rig and other products, to build the most advanced tunnel construction integrated equipment research and development base in China.