- Jarke Corporation
 - Niles - Cantilever, modular and boltless structural pallet racks, stacking frames and accessories, drum storage racks available in standard and made-to-order configurations. - REB Steel Material Handling and Record Storage Systems
- Chicago - Specialises in the design, manufacture, distribution and installation of material handling and record filing systems nationwide.
- G & F Manufacturing Company, Inc.
- Oak Lawn - Maker of stainless steel tanks.
- George O'Day's Shop, Inc.
- Chicago - CRT cabinet and locker reconditioner.
- Chicago Freight Systems
- Chicago - Trucking and warehouse company providing distribution, consolidation, cartage, and more.
- Randolph Industries
- Chicago - Manufactures custom and stock interlocking, stackable metal storage bins, boxes and shelves; metal security cabinets and parts handlers.
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