Thermoplastic road marking paint, also called hot melt marking paint, is a kind of powder Paint. When applied as road surface markings, a hot melt kettle is used to heat it to 200 °C (392 °F), after which it is sprayed on the road surface. The coating then becomes a line after cooling. This paint is thick coating, wear-resisting, bright and reflective. In recent years, practical applications have proved that the marking lines lack certain surface roughness and can easily cause wheel slip, resulting in a traffic accident in snow and rainy weather.