The cationic curing reaction will not be quenched when the light source is interrupted, but will continue to cross-link the resin with different acid-generating strengths. The degree of cross-linking will increase significantly within 1-5 minutes after exposure to light, reaching an ideal state within 1-2 hours, and reaching the highest degree of curing reaction in 2-7 days. If heating is provided after illumination, the speed of cross-linking and ultimately the strength of the cure can be accelerated. Therefore, by taking advantage of the cationic post-curing characteristics and controlling the curing cross-linking speed, it can be used for bonding on some opaque materials, and it can also be recoated in multiple layers without worrying about inter-layer adhesion.