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The new plug / A new safety plug

The new plug
The new plug

Use the plug downwards hung, pull down a grid, the bottom can be pulled out without like a traditional power as alignment.
You can press the button at both ends, with the power of copper and then took back the plug.
Pull because copper can shrink down so a force can change at.

University

Far East University

Far East University
Tainan City, Taiwan