lifebuoy

Now there are more and more electric vehicles on the street, it brings convenience to people while also bringing a great safety hazard to traffic safety. Ridin......

The life-saving ring is not the lifebuoy we usually use, its function is much more powerful, but it is still in the conceptual stage at present. Once the life-......

This baton-shaped thing is actually a lifebuoy. Compared with the lifebuoys we usually see, its size is much smaller. If we see someone drowning in the water, ......

This baton-shaped thing is actually a lifebuoy. Compared with the lifebuoys we usually see, it's much smaller in size. If you see someone drowning in the water......