Park-Ohio Holdings Corp. (Holdings) conducts its business primarily through the subsidiaries owned by its direct subsidiary, Park-Ohio Industries, Inc. (Park-Ohio). The Company is an industrial supply chain logistics and diversified manufacturing business operating in three segments: Supply Technologies, Aluminum Products and Manufactured Products. Supply Technologies provides its customers with Total Supply Management services for a range of specialty production components. Its Aluminum Products business manufactures cast and machined aluminum components, and its Manufactured Products business is a manufacturer of engineered industrial products. Its businesses serve industrial original equipment manufacturers (OEMs) in a variety of industrial sectors, including the automotive and vehicle parts, heavy-duty truck, oil and gas, power sports/fitness equipment, heating, ventilation and air conditioning (HVAC), electrical components, appliance and semiconductor equipment industries.