Group 1 - The company, Mankun Technology (301132.SZ), specializes in the research, production, and sales of single/double-sided and multi-layer printed circuit boards (PCBs) [2] - PCBs serve as the fundamental substrate and key interconnection components for electronic devices, with a wide range of applications including robotics [2] - The company's products have already been applied in industrial robotic arms and other related products [2]