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When wire isnt long enough, you need a wiring board, when the poor differ by very few ,wiring board as a cumbrance, wasting room and impacting the surrounding. The Square with a socket which can be pushed out 20cm has resolved the problem above. As long as going down the button on the lower right corner, the socket head fluffs out. Internal band tape organization helps wire to protrude and draws back smoothly, when the socket head is pressed down lightly, it returns to the appearance before using. The socket head have four jacks being unlike direction, the terminal block has effect of achieving the same goal with different means.
Zhengjiang University Of Technology