The classification of household appliances has not been unified in the world. However, it is more common to classify the functions and uses of products, and is roughly classified into 8 categories. 1 refrigeration appliances. Including household refrigerators, cold drinks machines, etc. 2 air conditioners. Including room air conditioners, fans, ventilation fans, hot and cold air, air dehumidifiers, etc. 3 Clean the appliance. Including washing machines, clothes dryers, electric irons, vacuum cleaners, floor waxing machines, etc. 4 kitchen appliances. Including electric cookers, microwave ovens, induction cooktops, electric ovens, rice cookers, dishwashers, electric water heaters, food processing machines, etc. 5 electric heating appliances. Including electric blankets, electric heating, water blankets, electric heating suits, space heaters. 6 plastic surgery appliances. Including electric razors, hair dryers, hair styling machines, ultrasonic cleaners, electric massagers. 7 audio appliances. Including pico projectors, televisions, radios, recorders, video recorders, video cameras, stereos, etc. 8 other electrical appliances, such as fire alarms, electric bells, etc.