China's Ban on Micron Escalates US-China Tech War.

China has banned U.S. chip maker Micron from selling its products to Chinese companies working on key infrastructure projects, citing national security risks and "serious cybersecurity problems" in Micron's products. The move comes amid escalating geopolitical tensions between China and the U.S. and mirrors similar moves made by the U.S. government against Chinese equipment makers over security concerns. Micron said it's "evaluating the conclusion and assessing our next steps."