Automobile headlights are generally considered to be normal sealing and bonding, but there are many requirements for automobile headlights or LED lamps, such as water vapor problems, such as adhesion, aging resistance and so on.

        The seal of automobile headlamp mainly prevents water from entering the interior of headlamp, which causes the damage of automobile headlamp. Automobile headlamp sealant must have better performance if it is tested by thermal expansion, cold shrinkage, high heat and other environment.