1. The first step of the plug is to hold the back end of the socket firmly by hand. Usually people will ignore it and grab it.
2. The second step is to check the plug. If the plug is not in the bottom or crooked, it is easy to ignite, and in serious cases, it will burn home appliances.
3. Take off the socket and plug firmly, and not too quickly to easily spark fire.
4. Do not use hands with water to remove the plug or plug the plug to prevent electric sparks.