Since 1983, Technology Sales has been providing Chattanooga and the surrounding areas excellent customer service. TSI is now ... proud to be one Chattanooga’s leading suppliers of industrial & mechanical plastics to include UHMW, Delrin, Plexi, Lexan, Nylon, and many more. TSI offers a range of materials and will cut to size almost all of our products and provides shipping across the U.S. with most items shipping the same day. read more