We at Design Engineering, Inc (DEI), one of the foremost suppliers of thermal tuning products, are very proud to welcome you to our catalog app. We have listened to our customer comments over the years and tried to incorporate all that we have learned from them. Our goal with this app is to provide education and information on our products. Please take note of such features as the embedded videos and hyperlinks to our website and social networking connections that offer many options to stay connected with DEI. We now offer the full line of DEI, CryO2, Boom Mat, Ny-Trex, Radiator Relief and SPA Turbo products for sale directly from our online store. Make sure you’re on top of all the DEI news by subscribing to our DEI Newsletter. Don’t forget about our Twitter and Facebook pages!