It is very dangerous and illegal to disassemble waste electrical appliances and extract metal by yourself, and it is not recommended to do so. Waste electrical appliances contain a variety of harmful substances, such as heavy metals such as lead, mercury, and cadmium, as well as toxic chemicals such as brominated flame retardant. Random disassembly and extraction of metals can cause these harmful substances to be released into the environment, pollute soil, water and air, and cause serious harm to the ecological environment and human health. The correct approach is to hand over waste electrical appliances to formal and qualified recycling companies, who will process and recycle them in accordance with environmentally friendly, safe and legal processes to ensure that resources are properly disposed of while avoiding environmental pollution and safety risks.