Our car windshield crack solution contains UV glue. It can make the repaired surface smooth without scratches. Prevent crack spread and prolong the service life of glass. Its use method is very simple: 1. Drop a drop of resin on the crack and cover it with a curing film; 2. Scrape off the air bubbles with a blade. 3. Move the vehicle to direct sunlight for 10-30 minutes, or replace the UV lamp until it solidifies. 4. Tear off the curing film and scrape off excess resin. Epoxy components ensure a strong structure after repair. The adhesive is firmly bonded to ensure the stability of the repair parts.