Genuine Parts Company distributes automotive replacement parts and industrial parts, operating the NAPA Auto Parts network of stores and distribution centers that supply both retail customers and professional auto repair shops. Its automotive parts business benefits from the ongoing need to maintain and repair an aging vehicle fleet, since cars require replacement parts throughout their operational life regardless of new vehicle sales trends. Genuine Parts also operates a separate industrial parts distribution business, supplying bearings, hydraulic components and other parts used in manufacturing and industrial maintenance, giving the company diversification beyond its automotive parts business. The company's revenue tends to be relatively resilient across economic cycles, since vehicle maintenance and industrial equipment upkeep are largely non-discretionary needs that continue regardless of broader economic conditions, though the mix of parts sold can shift somewhat with automotive and industrial activity levels.