Abroad usually put appliances into 4 categories:

White appliances, black appliances, beige appliances and green appliances.

White appliances that can substitute one product for household chores, including washing machines, refrigerators, etc., or a product can improve living qualities for people, such as air conditioning, electric heater, etc

Black appliances is to provide entertainment products, such as color TV, audio, game consoles. etc.

Beige appliances refers to the computer information products

Green appliances, means of acceptable quality under the premise can efficiently use and energy saving products, green appliances in use does not cause harm to humans and the environment. In the post-retirement, you can also recycle appliances.