Why it matters: The Reuters report reveals loopholes in the US export restrictions on high-performance GPU chips to China. Chinese retailers may have fulfilled orders using stockpiles acquired before the US tightened chip export restrictions in November. Sales may have included inventory previously exported to Chinese distributors, and the documents did not indicate that any of its partners violated export control regulations, Nvidia said. Dell told Reuters it had not seen any evidence of servers containing restricted chips being shipped to China after the embargo was implemented. It did not reply to inquiries regarding tenders that identified its products as a source of banned Nvidia chips.