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Chicago Rivet & Machine Co. operates in the fastener industry in North America. It operates in two segments, Fasteners and Assembly Equipment. The Fastener segment manufactures and sells rivets, cold-formed fasteners and parts, and screw machine products. The Assembly Equipment segment engages in the manufacture and sale of automatic rivet setting machines, as well as parts and tools for related machines. The company sells its products to automotive industry through independent sales representatives. Chicago Rivet & Machine Co. was founded in 1920 and is headquartered in Naperville, Illinois.

P&F Industries, Inc., through its subsidiaries, designs, imports, manufactures, and sells pneumatic hand tools primarily to the retail, industrial, automotive, and aerospace markets primarily in the United States. The company provides sanders, grinders, drills, saws, and impact wrenches under the Florida Pneumatic, Universal Tool, Jiffy Air Tool, AIRCAT, and NITROCAT names, as well as under private label trade names through in-house sales personnel and manufacturers' representatives to retailers, distributors, manufacturers, and private label customers. It also designs, manufactures, and distributes industrial tools, pneumatic systems, gearing products, accessories, and various replacement parts under the ATP, NUMATX, Thaxton, and Power Transmission Group brands directly to original equipment manufacturers, as well as through a network of specialized industrial distributors serving power generation, petrochemical, aerospace, construction, railroad, mining, ship building, fabricated metals, and other industries. P&F Industries, Inc. was incorporated in 1963 and is based in Melville, New York.

Productivity Technologies Corp., through its subsidiaries, manufactures and sells automated industrial systems, industrial machinery and equipment, and custom electrical control panels. The company offers quick die change, press automation, flexible transfer, and stacking/destacking equipment used to automate automotive and other metal stamping operations. In addition, the company engages in the design, manufacture, and installation of custom electrical control panels primarily for use in production machinery and machine tools utilized in automotive, adhesive and sealant, food processing, and other industrial applications. It sells its products to automobile and automotive parts manufacturers, appliance manufacturers, and steel service centers, as well as manufacturers of lawn and garden equipment, office furniture, heating, ventilation and air conditioning equipment, and large construction equipment in the United States and internationally. Productivity Technologies Corp. was formerly known as Production Systems Acquisition Corporation and changed its name to Productivity Technologies Corp. in May 1996. The company was incorporated in 1993 and is based in Fenton, Michigan. It has sales and engineering offices in Michigan, Germany, and China.

Riviera Tool Company designs, develops, manufactures, and sells metal stamping die systems used in the production of sheet metal parts and assemblies for the automotive industry. It also offers tool designs and prototype tooling and parts. The company's stamping die systems are used in the production of automobile and truck body parts, such as roofs, hoods, fenders, doors, door frames, structural components, and bumpers. It sells its tooling systems to either original equipment manufacturer directly or to manufacturers of products under contract with such OEMs. The company was founded in 1967 and is based in Grand Rapids, Michigan.

WSI Industries, Inc. engages in the precision contract metal machining business in the United States. It manufactures metal components in medium to high volumes in accordance with customer specifications. The company serves aerospace/avionics/defense industries, recreational power sports vehicles, markets, energy industry, automotive industry, and bioscience industry. WSI Industries, Inc. was founded in 1950 and is headquartered in Monticello, Minnesota.