Superior Industrial Supply is a leading distributor of the top brands in industrial supplies for maintenance, repair and operating (MRO) applications. Since 1969, Superior Industrial Supply has been a leading distributor of the top brands in industrial supplies for maintenance, repair and operating (MRO) applications. Customers nationwide enjoy our fair and competitive pricing. But what really sets us apart is our service. Whether you place an occasional order or have one of our full-service Vendor Managed Inventory (VMI) programs, no other distributor offers the custom solutions and personal attention youll find at Superior.