KLA Corporation is the world's leading supplier of process control and yield management systems for semiconductor manufacturing. Its inspection and metrology tools find defects and measure critical dimensions on wafers, reticles, and masks throughout the chip fabrication process, enabling manufacturers to improve yields at leading-edge nodes where tolerances are measured in atoms. KLA holds a dominant share of the process control market, several times larger than its nearest competitor, with customers including TSMC, Samsung, Intel, and leading memory makers. The company also supplies equipment for advanced packaging, specialty semiconductor processes, and printed circuit boards through its Electronics, Packaging and Components segment, and generates substantial recurring service revenue from its installed base. Formed by the 1997 merger of KLA Instruments and Tencor, it is headquartered in Milpitas, California.

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