Zilltek Technology Corp (6679.TWO) designs and develops high-value-added micro-electromechanical systems (MEMS) heterogeneous integrated circuits and analog mixed-signal semiconductors. The company offers MEMS microphones in analog, digital and optical variants; digital barometric pressure and temperature sensors; audio amplifiers; DC/DC converters; low dropout regulators (LDOs); touch screen controllers; AC/DC converters; LED drivers; and charger protection ICs. Its products serve consumer electronics applications including smartphones, PCs, wearable devices, tablets, notebooks, data communication equipment, LCD TVs and monitors, set-top boxes, surveillance systems, USB storage devices and IoT devices; primary markets encompass Taiwan, mainland China and international regions. Founded in 2005 and headquartered in Hsinchu Science Park, Taiwan, Zilltek maintains offices in China and engages in customer technology development, consulting, trading and investment activities. Recent developments include the release of its 2024 Sustainability Report in August 2025 covering environment, social responsibility and governance initiatives; the launch of miniaturized MEMS microphone chips featuring integrated LED and high signal-to-noise ratio (SNR) analog variants; inclusion in the MSCI Global Small Cap Indexes; attendance at IEEE MEMS 2025; and a share repurchase program from April to June 2025 acquiring 991,000 shares or 1.83% of its capital for TWD 204.52 million.