The latest EU teaching equipment access standards put forward more stringent requirements on the electromagnetic compatibility of electronic teaching aids and the environmental friendliness of plastic components. Domestic leading companies took the lead in introducing lead-free welding production lines, using food-grade silicone to replace traditional PVC materials, and developed laboratory-specific circuit modules that meet the new regulations through industry-university-research cooperation. The customs quality inspection department confirmed that the teaching aids using new processes have significantly reduced technical disputes during international customs clearance.