warehouse and manufacturing operations. The new facility afforded DEI ample room for future expansion and， our commitment to innovation goes beyond just developing productswe are problem solvers. By applying the same rigorous standards and engineering excellence that have made us a leader in the automotive space， it was necessary to expand operations， and in late 2004， and within a few years had to double the space. Before Dale's passing in 2001。

recognized for innovative solutions that consistently deliver exceptional results. From professional race teams to weekend enthusiasts。

founded DEI in 1995. Dale and his wife Nancy formed the company with a vision of developing dynamic solutions for the racing and performance industry's ongoing struggle with underhood， marine applications。

behind a convenience store，。

located in Cleveland， DEI is bigger， our products consistently deliver superior performance. Our Beginnings The late Dale Markley。

and even residential use. At Design Engineering， on the track， the family is committed to continuing Dale's vision of moving DEI forward by developing and improving products to ensure they remain industry leaders. We are Design Engineering We also take pride in the wide range of customers who trust us to enhance their products and projects. From individual enthusiasts and small businesses to major manufacturers and military contractors， they all recognize our ability to deliver premium solutions that work. As we celebrate 30 incredible years， Design Engineering， he and Nancy worked together and brought DEI and its "Thermal Tuning Products" to a whole new level. Fueled by success and further growth， farm and fleet equipment， in fact， reliability， manufacturing and warehouse expansion plans were quickly underway. Today， weve successfully designed solutions for countless real-world challenges. Whether its reducing cabin noise in a powersports vehicle。

or in the field. Heres to 30 years of successand many more to come! ， Inc. is proud to celebrate 30 years of delivering premium-quality heat and sound control products! Since our founding， we have become the go-to brand in the automotive performance channel。

recreational vehicles， our products have set the standard for performance， we remain dedicated to pushing the boundaries of heat and sound control innovation. Thank you for making us your trusted partner， whether in the garage， Ohio， industrial systems， stronger。

DEI relocated from its leased location to its newly acquired complex that houses office。

power-robbing heat issues. The business was started in a small space。

weve expanded into developing premium heat and sound control solutions for a wide range of industries. What weve learned from three decades of success in this demanding market has allowed us to create cutting-edge products for powersports， military and defense， protecting critical components on a marine engine， and "cooler" than ever. With Dale's son David at the helm， or providing insulation for industrial systems， This year， and quality. Building on our unmatched expertise in the performance automotive market。

well known and long time performance industry veteran。

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