Group 1 - The company focuses on providing high-speed PCB research and design, as well as PCBA research and small-batch manufacturing services [1] - The company serves over 3,000 clients annually, with some clients involved in the robotics industry [1] - The company's technical capabilities and process levels meet the current demands of humanoid robot-related clients [1] Group 2 - Details regarding cooperation and technical specifics with clients are considered trade secrets and cannot be disclosed [1]