China has ordered users of computer equipment to stop buying products from U.S. memory chipmaker

TECH NEWS — China's government Sunday told users of computer equipment deemed sensitive to stop buying products from the biggest U.S. memory chipmaker, Micron Technology Inc.
According to the Cyberspace Administration of China, Micron products have unspecified “serious network security risks” that pose hazards to China’s information infrastructure and affect national security..
voanews.com