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Automatic retractable reel works: scroll one end fixed on the ceiling or the wall, which can be around the cable, pipe, water pipes, lights, cable work light maintenance. Cable reel external input power line, usually plug part (non-automatic retractable function); output power line, a self-locking device, there are automatic cable reel features a pull cable, the self-locking device works (Power cord stops moving), if one wants cable recovery, then pull it out to be a cable, the cable crossed the self-locking devices release cable, cable automatically retracts.
Scroll principle similar to the trachea and its working principle: the external input section of pipe, pipe the output of a self-locking device with automatic cable reel features inside, pulled out a pipe, the self-locking device works (gas stops moving), such as To the trachea recovery, and then pull it out to be a tracheal crossed the self-locking device and release the trachea, tracheal recovery.
If necessary you can contact Heritage Electric Equipment Co., Ltd., Jinan, automatic retractable reels of good quality, convenient and durable, quality guaranteed, design is also very good
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