Prototype & Production Co., Inc.

Sauk Machine Works Limited

Numerical Precision, Inc.

Dynomax Inc.

Alta Packaging, Inc.

Alta Packaging, Inc. provides packaging solutions to a wide range of industries, including aerospace, automotive, fine china, artwork, pharmaceuticals, musical instruments, and computers. Our product lines include liquid foam, inflatable bubble, and paper, in addition to warehouse supplies such as tape, stretch film, corrugated, and strapping materials and equipment. 


Alta Packaging's focus is on labor costs and damage reductions through automation and improved operating efficiencies.

Swiss Precision Machining, Inc.

For 30 years, Swiss Precision Machining, Inc. (SPM) has evolved from a small shop with three Swiss-style cam machines to a modern job shop with over 90 diverse machines. Committed to quality, SPM stays ahead by incorporating advanced machines and software, enhancing their capacity to meet customer needs with precision products. Check their CNC Swiss Machining and CNC Vertical Machining offerings for more details.

Abbott Interfast Corp.

We're a US company located in Wheeling, Illinois, a suburb of Chicago. We have customers throughout the Americas and around the world, but primarily service North American manufacturers. Since 1948, we have a history of providing American industry low cost, quality products and service is a record of which we are extremely proud.


Whether it is contract or subassemblies manufactured in our wheeling facility, plastic knobs produced in Chicago, or automatic screw machine products produced in our two in-house factories, each member of our staff is proud of the products we provide.


We supply cold headed specials and locknuts produced in our in-house factories, along with bagged and specially packaged products. We maintain a complete line of standard fasteners located in our 5 acre, 100,000 sq. ft. facility stocking billions of standard parts for immediate shipment.We offer the greatest value to American companies using our customized inventory programs, whether J.I.T., Kanban, or a unique system More... developed to meet your company's requirements. 


 Serving companies from the "Fortune 500" down to one person operations, we treat each customer as unique, with different requirements, while striving to provide, and over 99+% of the time, total customer satisfaction. Many companies promise the best quality, service and low cost, but we have delivered on those promises since 1948.

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Suppliers specializing in Engineering Services located in (Wheeling)

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