The baby carriage's chain cover is indispensable. Children's bicycles with a saddle maximum height equal to or greater than 560 mm should be equipped with a disc chain cover or other protective device to cover the outer surface of the meshing part of the chain and sprocket, when the chain is fully meshed. When on the sprocket, the chain cover should extend beyond the outer side of the chain in the diameter direction. If no other chain guard is used, the shielding range should be extended to the point where the sprocket teeth initially enter the two sides of the chain. Along the chain to at least 25mm. Children's bicycles with a maximum saddle height of less than 560 mm should be equipped with a chain cover that covers the outer surface and edges of the chain, sprockets, and flywheel, as well as the inner surfaces of the sprocket and the chain and sprocket meshing points. To prevent children from getting their fingers into it. Because children's bicycles are not used for riding on the road, they must be used under the supervision of adults when they are used. They must not ride on the road.
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