Ultra Clean Holdings, Inc. designs, manufactures and sells its products and services primarily to customers in the semiconductor capital equipment industry. It operates through the following segments: Semiconductor Products & Solutions (SPS) and Semiconductor Services Business (SSB). The SPS segment provides warranty on its products for a period of up to two years and provides for warranty costs at the time of sale based on historical activity. The SSB segment provides part cleaning, coating and analytical expertise, to IDM and OEM customers. The company was founded in November 2002 and is headquartered in Hayward, CA.