WANG GANG / Feature China / Future Publishing / Getty Images Nvidia faces U.S. export restrictions on sales of its most advanced chips to China and has tailor-made some of its semiconductors for the country's market. KEY TAKEAWAYS China has reportedly banned its largest tech firms from buying Nvidia AI chips, adding pressure on the U.S. chipmaker’s sales in the country. The country’s internet regulator told firms including TikTok owner ByteDance and e-commerce giant Alibaba this week to end their testi ...