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Plugs usually end up on the floor or the corner when pulled out. In this case, the plug can become dirty due to dust and it can become a problem when plugging in the socket. Also, it can be stepped on.
To solve these problems, holes are made on the 4 corners to equip the plugs. It can hygienically store the plug, and it can be used by anyone with its intuitive design. Furthermore, the plug is on the top part where it can be grabbed easily without being stepped on.
Yong In University
Yong in, South Korea