Why U.S. AI Chipmakers Depend on Chinese Circuit Boards

Printed circuit boards are the hidden layer under nearly every AI chip, but most are made in China, creating a fragile link in the supply chain for Nvidia, Google, Apple and others. This video shows why that matters now, as demand and prices surge and the military struggles to source parts from the small pool of domestic factories. It also looks at the new push to rebuild PCB manufacturers at home and what it takes to make these boards. At TTM, the largest U.S. maker, the camera follows the manufacturing process up close while the story explains how the U.S. is trying to reduce risk and strengthen its base of US suppliers.