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The lifebuoy is equipped with a retractable ring, which can be opened and picked up, deciding the color of the lifebuoy. During the day, when several lifebuoys combine together, people can see the signal of the “SOS”, which is shaped from the material color. In the night, the reflecting light from the open ring self-luminous material also made the signal “SOS”.
Niu, Yuge
ChangSha, China
Niu, Yuge
ChangSha, China
Yuge Niu