Park-Ohio Holdings is a supply chain technology, logistics, and manufacturing company. It operates through three segments: Supply Technologies, Assembly Components, and Engineered Products. The Supply Technologies segment offers production components such as valves, fuel hose assemblies, electro-mechanical hardware, labels, fittings, and steering components, as well as engineering and design support, part usage and cost analysis, product packaging, tracking, and other services. The Assembly Components segment manufactures aluminum products, high-pressure direct fuel injection rails and pipes, fuel filler pipes, and flexible multi-layer plastic and rubber assemblies. The Engineered Products segment produces induction heating, melting, and pipe threading systems, as well as forged and machined products.