This is the second time that Nvidia’s permission to sell in China has changed. As widely reported in April, the firm got re-approved to sell chips to China after a dinner meeting between Huang and Trump in the spring, apparently including a tit-for-tat deal in which Nvidia would create new server setups stateside.

Nvidia stock spiked on Tuesday. The AI chip titan said it had received assurances from the administration that it can resume sales of key AI chips to China.

It’s been a very busy week for Nvidia CEO Jensen Huang. After meeting with President Donald Trump and senior officials in Beijing in recent days, Huang has secured a major victory for his AI-chip empire.