China's shield tunneling machine technology developed through a process of introducing, assimilating, and independently innovating on foreign technologies. In the early 1990s, China began importing advanced shield tunneling machine technology from abroad, which was then absorbed and re-innovated. Initially, shield tunneling machines were mainly imported, which was expensive and difficult to maintain. To change this situation, the Chinese government took a series of measures to encourage domestic enterprises and research institutions to strengthen independent research and development (R&D) and technological innovation.

　　On the policy level, the Chinese government introduced a series of supportive measures for the shield tunneling machine industry, including financial subsidies and tax incentives, providing a favorable development environment for enterprises. At the same time, the government strengthened the regulation and management of the shield tunneling machine industry, promoting healthy and orderly development.

　　At the enterprise level, Chinese shield tunneling machine companies continuously improved the performance and quality of their products by introducing advanced foreign technology, strengthening independent R&D, and technological innovation. Some companies have acquired the capability to independently develop and manufacture high-end shield tunneling machines. Their products not only meet the domestic market demand but are also exported overseas, making them strong competitors in the international market.

　　At the research institution level, Chinese research institutions have made a series of significant breakthroughs in the R&D of shield tunneling machine technology. They have conducted in-depth studies on the working principles, materials, and processes of shield tunneling machines, developing core technologies and key components with independent intellectual property rights, providing strong support for the industry's development.

　　Additionally, China has emphasized industry-university-research collaboration to promote the transformation and industrialization of research achievements. By establishing collaboration platforms, exchanges and cooperation between enterprises, universities, and research institutions are facilitated, jointly tackling technical challenges and driving continuous innovation and development in shield tunneling machine technology.

　　After years of effort, China’s shield tunneling machine technology has made significant progress. It not only dominates the domestic market but also holds a competitive position in the international market. In the future, with continuous technological advancements and sustained industry development, it is believed that China’s shield tunneling machine technology will achieve even greater success, contributing more significantly to global tunnel construction.