1. Just only unilateral retractable device could be one connecter to many connecter, that meaning is one cable equal to some cable, it is conveniently to carry with you, the cost is more benefited.

2. These connecter could be changed for your demand.

3. The cost lowest than wireless and reduce the usage of radiated products, and to avoid harm of electromagnetic wave, another it could solve the trouble of clean cable of wired products, it is quickly clean and collect, and convenient to carry with you.

4. “Unilateral Retractable Device”, it have got formal patent license at this unilateral retractable device, selling in USA, Europe and Japan now.

5. Be changed the surface by customer’s design for different selling area and brand.

6. The unilateral retractable device could be apply to your products, to increase your function and added value and diverseness between others. it is fit in with diversification and distinction of your promoting.