
Apple has until 21 August to respond to questions from US senators about its reported use of memory chips supplied by Chinese companies.
The lawmakers are seeking information about Apple's procurement practices and whether the company adequately assessed potential national security risks.
The Senate inquiry reflects broader US efforts to reduce reliance on Chinese technology in critical supply chains.
Apple has faced increasing pressure from US policymakers to explain its relationships with Chinese suppliers as tensions between Washington and Beijing continue.
The company has been diversifying its manufacturing network by expanding production in countries including India and Vietnam while maintaining a significant presence in China.
The outcome of the Senate review could influence future discussions on technology supply chains and the use of Chinese-made components by US companies.