Our automotive windshield repair fluids contain polyurethane, silane coupling agents. It can effectively prevent the spread of cracks. Its use method is simple: 1. Clean and dry the damaged area of the windshield, 2. Apply the windshield repair solution to the area that needs to be repaired, 3. Attach the curing film, fast curing in the sun for 5 minutes, 4. Finally, clean the residual resin on the surface with a blade. And it can quickly fill small cracks in the windshield and restore a clear view.