If your electrical plug is a standard flatplug so you do not have to bring anything, if it is needed to bring the round socket adapter.
如果你的电器插头是标准的扁形插头那么你什么都不用带，如果是圆形的就需要带转接插座。
2
The utility model relates to a rotary two-pole flatplug, suitable for a two-hole and three-hole flat jack socket using an AC power supply.
一种可旋转的二极扁插头，适用于交流电源两、三眼扁插孔插座。
3
I thought it would be a good idea to create a plug that could be folded flat so the pins would not cause any damage and also to make it as thin as the laptop itself.