To change the color of cement or asphalt pavement, you can use Yantai Huatong color pavement spray agent (color changing agent), which is a one-component polyurethane oily material. The oily product itself is incompatible with water, so it is not damaged by water. It has good impact, good durability, can be firmly adhered to the road surface after spraying, and has good coloring and fixation effect. You can try spraying at the beginning. After cleaning the area to be sprayed, you can do a spray test. After mastering the dosage and technique, you can spray a large area. Huatong color spray agent uses less materials. One kilogram can spray about 3 square meters (the amount of two sprays). It has high construction efficiency, saves time, effort and cost.