Role Responsibilities and Tasks： 1. Learn and understand the selection criteria for electrical components; 2. Prepare relevant technical documents and manage part numbers (e.g., terminal blocks, connectors, circuit breakers, etc.); 3. Familiarize yourself with the PDM system to create and upload material and project documentation. 4. Learn to navigate major electrical brand websites to quickly locate and download datasheets. 5. Efficiently utilize industrial purchasing platforms like Mouser to search for product information. 6. Study the principles and control logic of air conditioning systems and assist in creating system schematics. 7. Learn to draft routine test plans based on templates. 8. Gain knowledge of relevant technical standards and regulations in the rail transit industry. 9. Other tasks assigned by superiors Role Requirements： 1. Bachelor degree or above 2. Mechatronics, electric automation or related major 3. Ability to understand electrical schematics at a basic level 4. Familiarity with the working principles of common electrical components, such as circuit breakers, contactors, and relays; 5. Basic understanding of motors, including three-phase asynchronous motors and EC motors; 6. Knowledge of the working principles of PLCs (Programmable Logic Controllers) 7. CET-4 is required