China’s chip shares rallied on Monday morning following Beijing’s announcement to bar some purchases of merchandise from U.S. reminiscence chipmaker Micron.

China’s Our on-line world Administration barred operators of “important info infrastructure” in China from shopping for merchandise from the U.S. chip big following a safety overview carried out by the Our on-line world Administration of China.

Chinese language authorities mentioned Micron merchandise have failed its community safety overview, and cited “critical potential community safety points.” The agency poses a “main safety danger” to China’s important info infrastructure provide chain and impacts [its] nationwide safety,” a press release mentioned.

Shares of Chinese language chipmakers largely rose on Monday following the transfer: Hong Kong-listed Hua Hong Semiconductor rose as a lot as 3.14% on Monday, whereas SMIC rose 2.64%.

Different reminiscence chip producers in mainland China comparable to GigaDevice Semiconductor and Ingenic semiconductor jumped 3.74% and eight.08% respectively.

In response to Beijing’s announcement, the U.S. Commerce Secretary Gina Raimondo instructed the Wall Road Journal, “We firmly oppose restrictions that haven’t any foundation in reality.” The commerce division will interact with the Chinese language authorities to “element” its place and search additional readability, he added.

Raimondo mentioned the U.S. will interact with its key allies to handle Beijing’s actions, and that such measures will trigger “distortions of the reminiscence chip market.”

This comes because the U.S. reportedly urged South Korean chipmakers to not fill the shortfalls in China if Beijing’s ban comes into impact, the Monetary Occasions reported.

Shares of South Korean chipmakers SK Hynix and Samsung Electronics, each Micron rivals, rose on Monday morning.