UNDER BODY COATINGS OF AUTOMOBILE Body in white (BIW) is the stage in the automobile manufacturing in which a car body's frame has been joined together, that is before painting and before the motor, chassis sub-assemblies, or trim (glass, door locks/handles, seats, upholstery, electronics, etc.) have been integrated into the structure. Assembly involves different techniques such as welding (spot, MIG/MAG), riveting, clinching, bonding, and laser brazing. Automotive Underbody Coatings The underside of vehicles serves as an intermediate between the metal components of a vehicle and the outer environment. The underbody of vehicles is prone to damage due to harsh environmental conditions. Coatings are applied to the underside of vehicles to protect them against factors such as corrosion, chemicals, moisture, water damage, and chipping of the underbody. Automotive underbody coatings offer a protective layer to vehicles’ undersides. Most of these coatings provide chemical and corro...