DENSO knows: When building cars, the whole is very little without its parts. Among the world's largest automotive parts manufacturers, DENSO supplies OEM and aftermarket components and systems for most of the world's carmakers. Its six product groups make systems for powertrain control, information and safety, electric, electronic, small motors, and thermal systems. Its lines range from automotive air conditioning systems to radiators and spark plugs. The Information and Safety Systems arm develops car navigation and collision avoidance systems. Non-auto, industrial systems and consumer products are also made; subsidiary DENSO WAVE makes bar code readers, industrial robots, and programmable logic controllers.