Butler Durrell Security is a local family operated company in the greater St. Louis area now in its 2nd generation. As a team, they are dedicated to providing the best value in security systems for families and businesses.

CQRiT USA are leaders in designing and manufacturing high-quality and functional electronic asset tracking lockers and key cabinets. With worldwide distribution, the company has service agents and support personnel around the globe.

Herzog Technologies Inc. is a pioneer in railroad construction, maintenance, and operations. Founded in 1969 as an asphalt paving contractor, Herzog’s expertise now ranges from the construction of complex rail transportation projects to the operations and maintenance of 13 transit properties across North America.