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The multiple-tap wires is long and hard to store.
They look messy and so easy to get dirty and dusty.
Spiral Spring solves this problem making it easy to organize the wire.
Just pull the plug to stretch the wire.
After finished, lightly pull the wire and let it go.
It will get back into the body in a blink.
National Taipei University of
Chiu Yen-Kai Han Ji-Sook Tang Wei-Hsiang Tsai Po-An