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PSi Technologies Holdings makes packages that hold power semiconductors in the silicon equivalent of a full nelson. The company provides packaging and assembly services to top chip makers, such as Infineon (about 49% of sales), ON Semiconductor, STMicroelectronics (22%), and Texas Instruments. PSi Technologies takes customers' semiconductors and embeds them into protective casings in preparation for use; it specializes in working with power management semiconductors, such as field-effect transistors and voltage regulators -- devices that are built to handle high power levels and that require heavy-duty packaging techniques. Customers in Europe account for about three-quarters of sales.

PV Crystalox Solar PLC is engaged in the production and supply of multi-crystalline silicon wafers to the photovoltaic market worldwide. The Company has two segments: silicon products, and trading and equipment. The silicon products segment consists of silicon ingots and wafers produced by the Company companies and sold to solar cell manufacturers. The trading and equipment segment is mainly involved in the sourcing of silicon ingots from a supplier to the Company and the onwards supply of these ingots to a customer. In addition, the trading and equipment segment includes a relatively small amount of spare parts manufactured by PV Crystalox Solar PLC. The Company manufactures its multi-crystalline silicon ingots at its facilities in Oxfordshire, United Kingdom, and carries out wafer production for European customers at its facilities in Erfurt, Germany. Wafers for customers in Asia are produced in Japan.

Qcept Technologies, Inc. manufactures and sells wafer inspection systems for the semiconductor manufacturing industry. Its ChemetriQ inspection systems are used to detect non-visual residues, sub-monolayer metallic and organic contamination, and other yield-killing surface non-uniformities that cannot be seen by optical tools. The company was formerly known as Intelligent Sensor Systems, Inc. and changed its name to Qcept Technologies, Inc. in August 2002. Qcept Technologies, Inc. was founded in 2000 and is based in Atlanta, Georgia with a sales office in Austin, Texas.

QPL International Holdings Limited company provides leadframes, heatsinks, and stiffeners for the semiconductor industry through subsidiary QPL Limited. The company offers a variety of custom designs for clients for both etched and stamped leadframes, as well as standard products including SOIC (Small Outline Integrated Circuit), QFP (Quad Flat Package), and PLCC (Plastic Leaded Chip Carrier). QPL Limited operates manufacturing sites in China and has sales offices across the US and Asia/Pacific. The company also owns more than a 40% stake in customer ASAT Holdings, which offers semiconductor test, assembly, and packaging services.

QualiTau makes probe and test equipment used during semiconductor manufacturing to ensure product quality. The company's DSPT 9012 system conducts parametric tests of semiconductors, whether packaged or still on a wafer. Its ACE system tests for electromigration (the unwanted interaction between electrons and ions) in interconnects. Other systems include MIRA (reliability analysis) and Infinity (flexible package and wafer level test system). QualiTau also has a test lab service that offers independent test and evaluation services. Founded in 1991 by CEO Gadi Krieger and former CTO Peter Cuevas, QualiTau is owned by officers and outside investors. It has facilities in China, Germany, Israel, Japan, and the US.

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