AIT Division of Ultra Clean Holdings, Inc. Partners with XIA, LLC in the Development of Advanced Detection and Measurement Tool

HAYWARD, Calif., July 12, 2012 /PRNewswire/ -- Ultra Clean Holdings, Inc. (Nasdaq: UCTT) a leading developer and supplier of critical subsystems for the semiconductor capital equipment, flat panel, medical, energy, and research industries today announced that it has begun a pilot manufacturing program for Hayward, CA-based XIA, LLC. The AIT division of Ultra Clean Technology provides XIA with advanced design expertise, electro-mechanical systems integration, and system testing - all configured in a complete turnkey solution. As a result of the recent UCT/AIT merger, increased level of vertical integration will enable UCT to design, engineer and manufacture the UltraLo-1800 alpha particle counter more efficiently and with a shorter cycle time.

The XIA UltraLo-1800 is a low background alpha particle counter that employs electronic background suppression to drive achievable background rates to 0.0001 alpha/cm2/hr or lower. This is a factor of 50x better than can be achieved by the conventional proportional counter systems that are now commercially available.

Mr. Michael Sears, VP of production at XIA, LLC commented: "We chose to partner with AIT because of their ability to provide a true design-build-test solution for our new alpha particle counter. They have proven to be quite flexible and can accommodate design revisions easily and quickly." Clarence Granger, UCT's Chairman and Chief Executive Officer, commented on the XIA UltraLo-1800 product development partnership: "We are very happy with the results of the XIA program as the project demonstrates UCT's ability to expand into new technology markets. UCT adds value in the areas of design engineering, manufacturing expertise, cost containment and quality."

About Ultra Clean Holdings, Inc.

Ultra Clean Holdings, Inc. is a leading developer and supplier of critical subsystems for the semiconductor capital equipment, flat panel, medical, energy and research industries.  The company offers its customers integrated outsourced solutions for gas delivery systems, complex process modules, as well as complete turnkey systems integration. Ultra Clean Holdings' customers are primarily original equipment manufacturers for the semiconductor capital equipment, flat panel, medical device, energy and research industries. UCT has locations across the United States and Asia, and is headquartered in Hayward, California. Additional information is available at http://www.uct.com

About XIA, LLC

Headquartered in Hayward, CA, XIA, LLC (formerly X-ray Instrumentation Associates) produces advanced X-ray and gamma-ray detector electronics and related instruments with applications in research and industry. Additional information is available at: http://www.XIA.com

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The foregoing information contains, or may be deemed to contain, "forward-looking statements" (as defined in the US Private Securities Litigation Reform Act of 1995) which reflect our current views with respect to future events and financial performance.  We use words such as "anticipates," "projection," "forecast," "believes," "plan," "expect," "future,"' "intends," "may," "will," "should," "estimates," "predicts," and similar expressions to identify these forward-looking statements. Forward-looking statements included in this press release include our expectations with respect to our acquisition of AIT, including synergies and benefits of the transaction. All forward-looking statements address matters that involve risks and uncertainties. Accordingly, our actual results may differ materially from the results predicted or implied by these forward-looking statements. These risks, uncertainties and other factors also include, among others, those identified in "Risk Factors," "Management's Discussion and Analysis of Financial Condition and Results of Operations'' and elsewhere in our annual report on Form 10-K for the year ended December 30, 2011 filed with the Securities and Exchange Commission. Ultra Clean Holdings, Inc. undertakes no obligation to publicly update or review any forward-looking statements, whether as a result of new information future developments or otherwise.

SOURCE Ultra Clean Holdings, Inc.