Group 1 - Fenglong Co., Ltd. (002931) is located in Shaoxing, Zhejiang, specializing in precision manufacturing with core businesses in garden machinery, automotive parts, and hydraulic systems. The company has accumulated full-chain production capabilities and multiple patented technologies. By the end of 2025, humanoid robot leader UBTECH will complete its acquisition of a controlling stake in Fenglong, making it UBTECH's first subsidiary listed in A-shares. This acquisition represents a deep industrial synergy, as UBTECH needs mature manufacturing capabilities to support mass production, which Fenglong can provide for core components like joints and transmission systems [1][1][1] - Haoshi Electromechanical (300503) is headquartered in Guangzhou, Guangdong, and is a key player in the core components of humanoid robots, focusing on the research and development of frameless torque motors, harmonic reducers, and six-dimensional torque sensors. The company is a core supplier for Yuzhu Technology, with its components applied in the joint drive systems of quadruped and humanoid robots. Additionally, it has partnered with UBTECH to establish an innovation center for humanoid robots, tackling core technologies like six-dimensional sensors [2][2][2] - Tianqi Co., Ltd. (002009) is based in Wuxi, Jiangsu, and focuses on humanoid robot research in the industrial manufacturing sector, avoiding the C-end household scene. The company has established a joint venture with UBTECH to share core technologies and has built the first automotive working condition robot training base in Wuxi. It has signed long-term agreements with multiple automotive manufacturers, becoming a practical player in the commercialization of humanoid robots [3][3][3] Group 2 - Wuzhou Xinchun (603667) is a leading company in China that has achieved mass production of planetary roller screws, which are critical for the joint transmission of humanoid robots. The company has become an indirect first-level supplier to Tesla's Optimus through Hangzhou Xinjian Transmission, and its products meet international standards. It has also successfully entered the supply chains of major domestic clients like Huawei and ByteDance [4][4][4] - Zhejiang Rongtai (603119) is based in Jiaxing, Zhejiang, originally a leader in new energy vehicle insulation materials and a core supplier to Tesla. Starting in 2025, the company will enhance its humanoid robot business through acquisitions, including the acquisition of Diz Precision, which specializes in ball screws and electric cylinders, core components for humanoid robot joints [5][5][5] - Zhaowei Electromechanical (003021) is headquartered in Shenzhen, Guangdong, and specializes in micro transmission and drive systems, achieving technological breakthroughs in humanoid robot dexterous hands. The company has deeply penetrated the supply chains of leading humanoid robot companies like Tesla and Figure, supplying key components such as dexterous hand modules and micro hollow cup motors [6][6][6] Group 3 - Wolong Electric Drive (600580) is a leading company in the domestic motor sector, with a strong layout in humanoid robot joint power systems. It is the exclusive supplier of frameless torque motors for UBTECH's Walker S2 humanoid robot, which is a core power component for joint operation [7][7][7] - Orbbec (688322) is a domestic leader in the 3D vision field, providing critical visual perception capabilities for robots. The latest dual-camera 3D module it developed is used in UBTECH's Walker S2 humanoid robot, aiding in precise sorting operations in industrial scenarios [8][8][8] - Shangwei New Materials (688585) is based in Shanghai and specializes in high-performance materials. It is the exclusive supplier of adhesives for UBTECH's Walker S2 humanoid robot, providing carbon fiber joint adhesives and lightweight structural materials essential for the robot's stability and lifespan [9][9][9] Group 4 - Mingzhi Electric (603728) focuses on precision motors and motion control, being the only manufacturer globally to achieve mass production of slotless hollow cup motors. These motors are suitable for humanoid robot dexterous hands and finger joints, having been validated by Tesla's Optimus Gen2 [10][10][10] - Zhucheng Technology (301280) specializes in precision connector research and has established a significant presence in the robot industry chain. It is the exclusive supplier of connectors for UBTECH's entire series of humanoid robots, ensuring stable control and signal transmission [11][11][11] - Far East Co., Ltd. (600869) is based in Wuxi, Jiangsu, and provides key supporting components for humanoid robots, including robot cables and batteries. Its cables have been adapted for various joint movements in humanoid robots, and its cylindrical battery packs have been successfully integrated into industrial quadruped robots [12][12][12]