Spot welding glue is generally used for welding parts of steel plates such as car body, top cover, bottom plate, side wall, wheel set, etc., which play a role of sealing, waterproofing, and anti-corrosion, and prolonging the service life of the car. Mainly used in the paint shop of the vehicle factory. The paint shop is generally used for welding sealant, which is mainly used for sealing, and is mainly used for long welds, especially welds on the outer surface, such as the lap weld between the left center stone floor and the welding assembly. Weld. Glass sealant is generally used in assembly workshops, mainly for bonding and sealing, such as front windshield