October thirty first in the morning，Changsha Science and Technology Innovation Conference was held in Changsha Convention Center。Member of the Standing Committee of Hunan Provincial Committee、Municipal Party Secretary Wu Guiying attended and delivered a speech.，Vice Governor、Mayor Zhou Haibing presided，Deputy Secretary of the Party Committee of Railway Construction Heavy Industry、General Manager Wang Peng was invited to attend the meeting and made a speech.。

Ten scientific and technological achievements transformation projects and ten technological innovation products in Changsha from 2022 to 2024 were released at the meeting.，To award licenses to representatives of 10 Changsha enterprise R & D centers，Report a list of innovation and entrepreneurship stars of college students in Changsha。Among，Railway construction heavy industry diameter 8.The main bearing of the 61-meter shield machine was selected as one of the top ten scientific and technological innovative products in Changsha（2022-2024）。

Largest diameter in the world（8.61 meters）Main bearing of shield machine

Wang Peng introduced in his speech.，Railway Construction Heavy Industry Strives for Implementation“Three high and four new”Strategic main force，Actively participate in the construction of global R & D center cities，Self-reliance and self-improvement, gradually breaking through key core technologies，Independent research and development of more than 150 items to fill the international or domestic gaps in the first set of major technical equipment。National Key R & D Program、Supported by major science and technology projects in Changsha，Break through the main bearing quickly、Control system, etc“Stuck in the neck” Problem ，Successfully developed a diameter of 3 meters to 8.Main bearing of 61m shield machine，Build the heavy weapon of a big country“Chinese heart”。

Wang Peng made a speech

Wang Peng said，Tiejian Heavy Industry Pushing Roadheader、Special equipment、Upgrading of leading industries of rail system，Actively develop mining equipment、Agricultural machinery and equipment、Plateau emerging equipment and other new industries，Create the source of original technology for high-end equipment。In the future, it will also rely on Changsha's high-quality innovative resources and good innovative ecology.，Speed up the development of new technologies、Develop new products、Expand new fields，Create more heavy weapons of great powers with international voice，Step into the world first-class with Changsha。

The largest diameter independently developed by the conference to China Railway Construction Heavy Industry（16.64 meters）Shield machine“Jiang Hai Hao”Congratulations on the glory offline。Experts and scholars in Changcheng University、Person in charge of scientific research institution、Representatives of technology enterprises and financial institutions，And relevant units directly under the municipal government、District and county（City）、More than 300 persons in charge of the park attended the meeting.。