The Chinese standard plug is used in China, Australia, New Zealand, and Argentina, and is characterized by three flat heads.

The American standard plug is used in the United States, Canada, Japan, Brazil, the Philippines, Thailand, and Taiwan, and is featured by one round head and two flat heads.

The British standard plug is used in Hong Kong, the United Kingdom, India, Pakistan, Singapore, Malaysia, Vietnam, Indonesia, Maldives, Qatar and other countries and regions,featuring three square heads.

European standard ( German standard ) plugs are used in EU countries such as Germany, France, the Netherlands, Denmark, Finland, Norway, Poland, Portugal, Austria, Belgium, Hungary, Spain, Sweden, South Korea, Russia and other countries. They are characterized by two round heads.

The following are the voltage standards of various countries:
The United States, Canada, South Korea, Japan, Taiwan, etc. belong to the 110V voltage area
110~130V: Taiwan, the United States, Canada, Mexico, Panama, Cuba, Lebanon and other 30 countries
220~230V: China, Hong Kong (200V), the United Kingdom, Germany, France, Italy, Australia, India, Singapore, Thailand, the Netherlands, Spain, Greece, Austria, the Philippines, Norway and about 120 countries.
