Ultra Clean Technology (UCT, also known as Ultra Clean Holdings) is a developer and supplier of subsystems, components, parts, and cleaning and analytical services for the semiconductor industry. It operates through two segments: Products and Services. The Products segment offers chemical delivery modules, frame assemblies, gas and fluid delivery systems, precision robotics and process modules, etc. The Services segment provides parts cleaning, process tool part recoating, surface encapsulation, and micro-contamination analysis.