Ultra Clean Holdings, Inc.

Ultra Clean Holdings supplies critical subsystems, components, and specialized services to the semiconductor equipment and manufacturing sectors. The company develops and manufactures gas delivery solutions including precision thermal products, valves, connectors, actuators, and manifolds. It also produces complex assemblies such as wafer transport systems, mechatronic assemblies, and process modules, along with precision weldments and frames engineered to exact specifications. Beyond manufacturing, the company offers tool chamber cleaning, coating services, and analytical verification of cleaning effectiveness and contamination analysis for semiconductor fabrication equipment.

The company serves primarily semiconductor capital equipment manufacturers and integrated device manufacturers, with additional revenue from display, medical, energy, industrial, and research equipment sectors. Its service offerings include outsourced engineering, design, component sourcing, prototyping, and manufacturing support. Ultra Clean also provides process optimization consulting and contamination analysis services for semiconductor tool chambers and wafers.

With 6,948 full-time employees and headquarters in Hayward, California, the company operates internationally. Ultra Clean was incorporated in Delaware and is listed on Nasdaq with a market capitalization of $2.7 billion.