(Reuters) -Chinese authorities have urged local companies to avoid using Nvidia’s H20 processors, particularly for government-related purposes, Bloomberg News reported on Tuesday, citing people familiar with the matter.

Authorities have sent notices to a range of firms discouraging use of the less-advanced semiconductors, with the guidance taking a particularly strong stance against the use of Nvidia’s H20s for any government or national security-related work by state enterprises or private companies, the report said.

Reuters could not immediately confirm the report. Nvidia did not immediately respond to a request for comment outside regular business hours.

Nvidia said in July that its products have no “backdoors” that would allow remote access or control after China raised concerns ove

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