... slow effect, high anti-impact ability3. It is quick, easy way to install saving time and working4. widely used, one of the ... , village, parking lot, and gas station, etc in order to preventing the traffic accident.Grade: Speed CushionmodelSizeweightcolorMaterialNK-018AL3000×W1800×H65mm ... installed on the surface of asphalt roads and concrete roads2) To improve life span, the road must be smooth. After ...