Liaoning Sansan Industrial Co., Ltd. (hereinafter referred to as Sansan Industrial) was established in 2009. In 2011, it entered the field of tunnel boring machine manufacturing. In 2014, Sansan Industrial acquired a subsidiary of the Fortune 500 American Caterpillar Company, Canada. Caterpillar Tunnel Equipment Co., Ltd. has all assets and intellectual property rights, specializing in the research, design, production, manufacturing and sales of shield machine/TBM tunnel boring machines, becoming a world-leading equipment manufacturer and technical service provider.

Sansan Industry has the Shield Machinery/TBM Tunnel Boring Machine Engineering Research Center, established an academician workstation, and was approved to build a postdoctoral workstation. Sansan Industry has a domestic and overseas research and development team with high R&D level, strong technical capabilities and rich practical experience. It has established four major research and designs, including Liaoyang Headquarters Research and Design Institute, Canadian LOVSUNS Overseas R&D Center, Shenyang Research Branch, and Wuhan Research Branch. hospital.

Sansan Industry covers an area of ​​220 mu, has a construction area of ​​60,000 square meters, has 8 production and manufacturing workshops, a system-based large-scale CNC machining center, a complete flow-through operation platform and well-trained technical workers. The factory has a total of 1,000 employees. The factory area is divided into welding center, machine-added center, department-installation center and final assembly center, which realizes flow-through operations. The final assembly center has 8 workstations and an annual production capacity of 100 units.

The leading product of Sansan Industry is the shield machine/TBM tunnel boring machine, and is one of the companies that can produce "full type and full diameter" tunnel boring machine products. The products include five categories: soil pressure balance, mud water balance, hard rock TBM, special-shaped and vertical shield machines, with diameters ranging from 2 meters to 24 meters. Products are widely used in subways, municipal comprehensive pipelines, highways, railways, water conservancy, energy, mines, underground parking lots, military industry and other fields. They have entered the vast majority of cities in the country for the construction of subways and are sold to the UK, Russia, Italy and Switzerland. , Spain, Turkey, the United States, Canada, Australia and other countries and regions, especially countries along the "Belt and Road".

In China, Sansan Industry has seven major service bases, including headquarters, Tianjin, Hangzhou, Guangzhou, Chengdu, Xi'an and Wuhan. Overseas, Sansan Industry has 24 agents and service providers. The after-sales service team composed of first-class mechanical, electrical and hydraulic experts at home and abroad provides professional and systematic services to customers around the world, achieving 1 hour response to general problems and 12 hours for special problems to arrive at the site.