DCI vs TTMI Comparison

Donaldson is a leading manufacturer of filtration systems and replacement parts, including air filtration systems, liquid filtration systems, and dust, fume, and mist collectors. The company serves a diverse range of end markets, including construction, mining, agriculture, truck, and industrial. Its business is organized into three segments: mobile solutions, industrial solutions, and life sciences. Donaldson generated approximately $3.7 billion in revenue in its fiscal 2025.

TTM Technologies Inc manufactures technology products, including mission systems, RF components, RF/microwave assemblies, and advanced interconnect products such as PCBs and substrates. It operates through three segments: A&D, Commercial, and RF&S Components. The A&D segment supports aerospace and defense missions with PCBs, assemblies, microelectronics, and integrated systems. The Commercial segment, generating the majority of revenue, serves automotive, medical, industrial, and data center markets. The RF&S Components segment provides TTM-designed RF components and COTS products. The Company's revenues come from PCBs, engineered systems, and long-term contracts for intelligence, surveillance, and communications solutions.