Saf-T-Box has been in the container business for over 20 years. In that time, the company has grown to a home office and 5 Texas locations with 56 employees. They specialize in modifying, renting, and selling shipping containers. With a large inventory of units and dozens of custom modifications they can make to the containers for their customers, Saf-T-Box has a business model that can be tough for some banks to figure out.