Not according to their reported financials. You have a source for that number?
https://www.cnbc.com/amp/2023/12/01/this-tiny-country-drove-...
About 15% or $2.7 billion of Nvidia's revenue for the quarter ended October came from Singapore, a U.S. Securities and Exchange Commission filing showed. Revenue coming from Singapore in the third quarter jumped 404.1% from the $562 million in revenue recorded in the same period a year ago.