China bans information infrastructure operators from procuring from US chipmaker

China has required domestic operators of critical information infrastructure to stop procuring from major US chipmaker Micron Technology. The move is seen as a countermeasure against tightened US controls on semiconductor-related exports to the country.

China's cyberspace regulator announced the requirement on Sunday, saying it found serious network security risks in Micron's products.

The regulator says the products pose significant security risks to China's critical information infrastructure supply chain, affecting the country's national security.

About 3.3 billion dollars' worth of the company's products were sold in China last year, accounting for 10 percent of the firm's overall sales.