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Hide in the wall inside, when using, need to press to be able to spring out only, plug in later turn plug, when connect a line, ability is electrify, when need not, turn plug into original position to be able to pull out and cut off power, not only saved a space, and dustproof waterproof, relatively safe.
Hubei University Of Technology
Wuhan, China
Xiaoqian Wang,
Hubei University Of Technology
