Tai-Saw Technology (TST, 台灣嘉碩科技股份有限公司) is a company that manufactures frequency-control and RF components. It offers surface acoustic wave (SAW) filters, duplexers, and resonators, as well as bulk acoustic wave and quartz devices such as crystal resonators and oscillators. These components are used in mobile and base-station RF chains, WLAN, GNSS, Bluetooth, and automotive electronics.