It is illegal and risky to extract rare metals from old electrical appliances privately and sell them. It is not recommended to do so. Old electrical appliances are electronic waste. Randomly dismantling and extracting metals and other substances from them may violate relevant national environmental protection laws and regulations, such as the "Regulations on the Recycling and Treatment of Waste Electrical and Electronic Products". Engaging in related dismantling activities without permission will be punished; on the other hand, improper operation may cause environmental pollution during the self-extraction process, such as heavy metal pollution of soil and water sources, and may also endanger human health due to the treatment of harmful substances in old electrical appliances (such as lead, mercury, cadmium, etc.). The correct approach is to hand over old electrical appliances to legal and compliant regular electronic waste recycling and treatment companies, and let them recycle and treat them according to standardized processes and technologies to achieve rational use of resources and environmental protection.