HAYWARD, Calif. — Ultra Clean Holdings, Inc. (Nasdaq: UCTT) announced today that it has entered into an agreement with Orbotech Ltd. (Nasdaq: ORBK) under which Ultra Clean will provide manufacturing services to Orbotech at one of Ultra Clean’s two facilities in Shanghai.  Ultra Clean Microelectronics Equipment Co. Ltd (UCME), a subsidiary of UCTT, will assemble products from Orbotech’s Supervision range of high-speed automated optical inspection (AOI) systems for applications in the manufacture of flat panel display products. UCME already provides manufacturing services to Orbotech for its Array Checker flat panel display test systems and this latest agreement will significantly extend both the scope and scale of Ultra Clean’s support of the Orbotech Group in China.

Ultra Clean is a leading developer and supplier of critical subsystems for the semiconductor capital equipment, flat panel, energy, and medical device industries.  Orbotech is an industry leading designer, developer and manufacturer of yield-enhancing and production solutions for specialized applications in automated optical inspection (AOI), production and process control systems for printed circuit boards (PCBs); and AOI, test and repair systems for flat panel displays (FPDs).

“Ultra Clean has become an important manufacturing partner to Orbotech in our China operations.  By providing ongoing – and now extended – exceptional technical support, project management and turnkey manufacturing capabilities, Ultra Clean has enabled Orbotech to meet the increasingly demanding needs and expectations of our customers in Asia, and we look forward to its continuing to do so” said Reuven Losh, Orbotech’s Corporate Vice President and Co-President for Operations.

“We appreciate the continued trust that Orbotech has shown in Ultra Clean through this latest agreement and are very excited to be expanding our role as one of its outsource manufacturing partners in this rapidly growing market, ” said Clarence Granger, Ultra Clean’s chairman and CEO.

David Savage, Ultra Clean’s president and COO added “the systems we now build for Orbotech at UCME fit ideally with Ultra Clean’s core capabilities in assembly and test of highly complex, electromechanical equipment and with our strategic goal to partner with industry leading companies in high technology markets.”

About Ultra Clean Holdings, Inc.

Ultra Clean Holdings, Inc. is a developer and supplier of critical subsystems for the semiconductor capital equipment, medical device, research, flat panel and solar industries. Ultra Clean offers its customers an integrated outsourced solution for gas delivery systems and other subassemblies, improved design-to-delivery cycle times, component neutral design and manufacturing and component testing capabilities. Ultra Clean is headquartered in Hayward, California. Additional information is available at www.uct.com.

About Orbotech Ltd.

Orbotech is principally engaged in the design, development, manufacture, marketing and service of yield-enhancing and production solutions for specialized applications in the supply chain of the electronics industry. Orbotech’s products include automated optical inspection (AOI), production and process control systems for printed circuit boards (PCBs) and AOI, test and repair systems for flat panel displays (FPDs). The Company also markets computer-aided manufacturing (CAM) and engineering solutions for PCB production. In addition, through its subsidiary, Orbograph Ltd., the Company develops and markets character recognition solutions to banks and other financial institutions, and has developed a proprietary technology for web-based, location-independent data entry for check processing and forms processing; and, through its subsidiaries, Orbotech Medical Denmark A/S and Orbotech Medical Solutions Ltd., is engaged in the research and development, manufacture and sale of specialized products for application in medical nuclear imaging. Of Orbotech’s employees, more than one quarter are scientists and engineers, who integrate their multi-disciplinary knowledge, talents and skills to develop and provide sophisticated solutions and technologies designed to meet customers’ long-term needs. Orbotech maintains its headquarters and its primary research, development and manufacturing facilities in Israel, and more than 30 offices worldwide. Orbotech’s extensive network of marketing, sales and customer support teams throughout North America, Europe, the Pacific Rim, China and Japan deliver its knowledge and expertise directly to customers the world over. For more information visit www.orbotech.com.

Safe Harbor Statement

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,” “believes,” “plan,” “expect,” “future,”‘ “intends,” “may,” “will,” “should,” “estimates,” “predicts,” “potential,” “continue” and similar expressions to identify these forward-looking statements. All forward-looking statements address matters that involve risks and uncertainties. These risks, uncertainties and other factors 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 January 2, 2009 and quarterly report on Form 10-Q for the quarter ended October 2, 2009, 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.