Investment Rating - The report suggests that humanoid robot "small brain" is expected to become an important main track for investment opportunities [4]. Core Insights - The humanoid robot "small brain" is primarily responsible for trajectory planning and motion control, consisting of controllers, servo drivers, motors, and sensors. Its development is expected to create numerous investment opportunities as the industry matures [1]. - The rapid iteration of the humanoid robot "brain" enhances the importance of the "small brain," which faces high barriers and complexity in its technological route, making breakthroughs challenging [1]. - Potential business models for the "small brain" include third-party solutions, integrated models, and deep cooperation for secondary development [2]. Summary by Sections 1. Humanoid Robot "Small Brain" as a Main Track - The "small brain" is crucial for motion control, with its complexity increasing as it needs to handle multidimensional input signals and higher degrees of freedom [1]. - The "brain" is evolving rapidly, with significant breakthroughs in technology, enhancing the "small brain's" importance in the industry [1]. 2. Potential Business Models for the "Small Brain" - Three potential business models are identified: 1. Third-party model providing standardized solutions to achieve scale [2]. 2. Integrated model focusing on motion control technology from inception [2]. 3. Deep cooperation for secondary development with leading manufacturing companies [2]. 3. Companies with Growth Opportunities in the "Small Brain" Sector - Companies with high-end equipment capabilities and multi-axis control, such as Solid High Technology, Huazhong CNC, and Kede CNC, are well-positioned for growth [3]. - Companies with industrial robot motion control capabilities, like Tuosida, Aifute, and Estun, are also expected to extend their offerings into the humanoid robot sector [3]. 4. Investment Recommendations - The report recommends focusing on companies with relevant technological reserves, particularly Huazhong CNC and Kede CNC, due to the significant growth potential in the humanoid robot sector [4].