Performance Beyond Expectations. STE’s growth in a tough, competitive industry is a direct result of our commitment to providing the best, most reliable tankers. It’s no secret that we have been the longest lasting and most rugged in the industry. Now we are also being known as Innovative Leaders with our new LITELINE and the DOT 407 Tank Lines and we are not stopping there. Whether you are transporting sanitary, food grade, or chemical products, we have the solution. Let one of our “Best in Class” Distributors help determine the right tanker for your specific needs.