Vibration marking

Vibration marking (also known as noise markings), its appearance is concave convex type, the base plus protruding part height is 5-7mm. Usually produced points, bars, etc., the car will have a "bang" sound, the driver has a good warning and warning role, so also known as noise markings. Compared to the slow road nails (iron), the sound is much more gentle. It is a kind of high and new technology product which is widely used by the developed countries in the world and has advanced international level.
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