SINGAPORE (Reuters) -Nvidia is working on a version of its new flagship AI chips for the China market that would be compatible with current US export controls, three sources familiar with the matter said. The AI chip giant in March unveiled its "Blackwell" chip series, which is due to be mass-produced later in the year. Nvidia will work with Inspur, one of its major distributor partners in China, on the launch and distribution of the chip which is tentatively named the "B20", two of the sources said.