How many parts does the body-in-white assembly consist of?

[Aria]

The definition of body-in-white: Body-in-white (BIW), according to the standard terminology of vehicle body and textbook definitions, refers to the welded assembly of body structural components and covering parts. The specific composition is as follows: 1. Front fenders, doors, engine hood, trunk lid, but does not include unpainted body parts without accessories and decorative components. 2. Painted body-in-white plus interior and exterior trims (including dashboard, seats, windshield, carpets, interior panels, etc.). 3. Electronic and electrical systems (audio, wiring harnesses, switches, etc.). 4. Chassis system (including braking, suspension systems, etc.). 5. Powertrain system (including engine, transmission, etc.).