Core Viewpoint - The 12th National Geometric Quality and Dimensional Engineering Technology Summit Forum was successfully held in Xiamen, marking a significant milestone in the development of dimensional engineering in China, emphasizing innovation and stability for high-quality manufacturing [1][5][30]. Group 1: Event Overview - The forum took place on March 26-27, 2026, organized by the China Dimensional Engineering Alliance, attracting over 150 technical personnel from major automotive companies, software and equipment manufacturers, and academic institutions [2][5]. - The theme of the forum was "Odd and Even," focusing on the balance between innovation and tradition, aiming to contribute to the high-quality development of Chinese manufacturing [5]. Group 2: Key Presentations - Professor Li Ming from Shanghai University highlighted the importance of data relevance and engineering logic in the practical application of industrial AI, stressing the need for a solid standardization foundation to enable AI in engineering practices [13]. - Zhang Huibo, General Manager of Dituo (Shanghai) Technology Development Co., emphasized the shift in dimensional engineering from post-verification to pre-prediction and real-time feedback, aiming to connect AI with various industries [14]. - Xu Haijun from Dituo introduced the application of DTAS 3D+AI in dimensional engineering, showcasing automated tolerance analysis and design practices [18]. Group 3: Industry Challenges and Innovations - Cao Zhaofeng from Wuhan Weijing 3D Technology discussed optical measurement solutions for the challenges posed by new manufacturing processes in the automotive industry, particularly in electric vehicles [19]. - Liu Zhihui from Li Auto presented on the exploration of automotive dimensional big data in the context of AI, focusing on digital planning and data application [25]. - The need for a systemic engineering transformation was emphasized, advocating for a shift from passive quality inspection to proactive quality architecture planning [26]. Group 4: Future Directions - The forum concluded with a call for collaboration and integration across the entire manufacturing process, aiming to break down barriers and enhance the depth of professional expertise in dimensional engineering [33]. - A proposal was made to establish national standardization guidelines for dimensional engineering terminology and definitions, marking a new phase for the China Dimensional Engineering Alliance [30].