Ultra Clean Holdings, Inc. (UCH) develops and supplies critical systems and subsystems. The company’s products include precision robotic solutions, gas delivery systems, industrial and automation production equipment products, chemical delivery modules, top-plate assemblies, wafer cleaning sub-systems, frame assemblies, and process modules. Its services include design, engineering, testing, system assembly, global supply chain management and others. UCH serves original equipment manufacturers across semiconductor capital equipment, medical, flat panel, energy, and research industries. The company distributes its products through its own sales force across North America, Asia and Europe. It has a presence in the US, China, Singapore and the Czech Republic. UCH is headquartered in Hayward, California, the US.