Landao's folding electric car is broken

Hello, I would like to ask what should I do if the folding electric bike driven by Blue Island breaks down? The solution to a broken Blue Island folding electric bike is to ask the seller to replace it with a new one or replace the frame. Since chassis breakage is a serious quality accident in the electric vehicle industry, you can ask the seller to replace the car with a new one or replace the chassis. In the event of bodily injury, compensation can also be requested. The steel tube of the frame is too thin or rusty due to poor material quality, resulting in a break that cannot be directly welded. The broken part must be cut, then recut according to the geometry of the damaged part, the cut part must be replaced, then welded.