TriMas Corp. engages in the manufacture of industrial products for customers in the consumer products, aerospace, industrial, petrochemical, refinery, and oil and gas end markets. It operates through the following segments: Packaging, Aerospace, and Specialty Products. The Packaging segment designs and manufactures dispensing products, including foaming pumps, lotion and hand soap pumps, sanitizer pumps, beverage dispensers, perfume sprayers, nasal sprayers and trigger sprayers, polymeric and steel caps and closures, including food lids, flip-top closures, child resistant caps, drum and pail closures, and flexible spouts, polymeric jar products, and fully integrated dispensers for fill-ready bag-in-box applications, all for a variety of consumer product markets including, but not limited to, beauty and personal care, home care, food and beverage, and pharmaceutical and nutraceutical, as well as the industrial market. The Aerospace segment is involved in the design and manufacture of precision fasteners, tubular products and assemblies for fluid conveyance, and machined products and assemblies to serve the aerospace and defense market under the brand name Monogram Aerospace Fasteners, RSA Engineered Products and Martinic Engineering, Allfast Fastening Systems, and Mac Fasteners. The Specialty Products segment designs, manufactures, and distributes highly-engineered steel cylinders, wellhead engines, and compression systems for use within industrial markets and includes the Norris Cylinder and Arrow Engine brands. The company was founded by Brian P. Campbell in 1986 and is headquartered in Bloomfield Hills, MI.

Materion Corp. engages in the production of engineered materials used in a variety of electrical, electronic, thermal, and structural applications. It operates through the following segments: Performance Materials, Electronic Materials, Precision Optics, and Other. The Performance Materials segment provides engineered solutions consisting of beryllium and non-beryllium. The Electronic Materials segment produces chemicals, microelectronics packaging, precious metal, non-precious metal, and specialty metal products. The Precision Optics segment designs and produces precision thin film coatings, optical filters, and assemblies. The Other segment includes unallocated corporate costs and assets. The company was founded in 1931 and is headquartered in Mayfield Heights, OH.

Mayville Engineering Co., Inc. engages in the manufacture of metal components. The firm offers a broad range of design, prototyping and tooling, production fabrication, aluminum extrusion, coating, assembly, and aftermarket components. Its customers operate in a diverse end market, including heavy and medium duty commercial vehicles, construction and access equipment, powersports, agriculture, military, and other end markets. The company was founded by Leo Bachhuber and Ted Bachhuber in 1945 and is headquartered in Milwaukee, WI.