Southwest Mobile Storage Inc

From the website:

Southwest Mobile Storage is a family owned business founded in 1995. Our 11-acre headquarters in Phoenix, AZ features a 90,000 sq ft indoor fabrication facility staffed with more than 40 certified engineers, welders, fabricators, electricians, carpenters and painters bringing over 500 years combined experience specialized in modifying steel containers. This level of facility and expertise is unmatched in the industry.