China's cyberspace regulator said on Sunday that products made by Micron had failed its network security review, and it would bar operators of key infrastructure from buying from the company.

China's memory chipmaking-related firms gigadevice semiconductors, ingenic semiconductor, shenzhen kaifa technology opened up between 3% and 8%.

(Reporting by Jason Xue and Brenda Goh; Editing by Kim Coghill)