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Our core business is the PowerBox. This revolutionary product originated in Europe where its increasing popularity has made it today's product of choice among thousands of diesel owners who desire more power and overall performance. TDC PowerBoxes are Made in Germany and designed to deliver more power and torque in order to imporve responsiveness, towing capacity, and top-end speed. The PowerBox is fuel-efficient and features integrated technology to ensure optimal performance. TDC offers the most innovative and reliable power conversion devices on the market.