Lam Research Corp (LRCX) collaborates with Taiwan Semiconductor Manufacturing (TSMC) in the development and supply of semiconductor wafer fabrication equipment. LRCX provides equipment for TSMC's etch and deposition processes, which are critical for building integrated circuits (ICs) and other semiconductor devices. This partnership is essential for TSMC's operations, as LRCX's technology and expertise are integral to TSMC's ability to produce advanced chips.