Three's certainly company, if the company is Trio-Tech. Performing a trio of functions related to semiconductor manufacturing and testing, Trio-Tech International lives up to its name. First, the company makes its own chip manufacturing and test equipment; its front- and back-end testing products include temperature-controlled chucks, centrifuges, leak detectors, and burn-in equipment. Second, Trio-Tech provides outsourced testing services for chip manufacturers. Third, it distributes semiconductor manufacturing and testing equipment made by other companies. Trio-Tech's top customers have included Advanced Micro Devices, Freescale Semiconductor, and Infineon Technologies.