Water-based paint uses water as solvent to save a lot of resources. Eliminate the fire risk during construction; Reduce air pollution; Only a small amount of low toxic alcohol ether organic solvent was used to improve the operating environment. The organic solvent of common water-based coatings is between 5% and 15%, while that of cathodic electrophoretic coatings has been reduced to less than 1.2%, which has a remarkable effect on reducing pollution and saving resources