Shortwave infrared is different from middle and long wave far infrared, and its wavelength has very strong osmotic power deep into paint layer, which makes the temperature of the paint layer′s basic body (crust of the vehicle)go up quickly and brings spontaneous hot domino effect, the moist-ure (or solvent) of the paint layer will quickly volatilize form inside to outside. When the chemical vibrant frequencies of the paint dope are the same, chemical bond of the paint dope will enlarge it′s occurring, it increases the probability of the chance for aggregation and speed up the solidify of the paint layer, Therefore, the degree of blare and chubbiness on the paint layer is high and the attaching power of the paint layer is strong, Some phenomena e.g.m and arin orange′s hull and lacrimation′will not easily happen. it will avoid doing poorly done work over again,save cots and improve the efficiency