In 2021, STI was acquired by Sonny's The CarWash Factory, the world’s largest manufacturer of conveyorized car wash equipment, parts, and supplies. STI's headquarters remain in Barrie, Ontario. STI develops the most innovative and longest lasting conveyor systems on the market. Our cutting edge technology will keep you on the leading edge of your industry! These systems are turn-key, ready to go for your express or full-service was operation.