China’s Cyberspace Administration has launched a cybersecurity investigation into Nvidia’s H20 graphics-processing unit, saying the AI accelerator designed for the Chinese market poses potential security risks, according to Nikkei Asia. Regulators have asked the U.S. chipmaker to explain alleged backdoors and provide supporting technical documentation. The probe comes less than a week after Reuters reported that Nvidia ordered about 300,000 additional H20 chips from contract manufacturer Taiwan Semiconductor Manufacturing Co., responding to stronger-than-expected demand from Chinese customers. The latest order would add to Nvidia’s existing inventory of roughly 600,000–700,000 H20 units. Nvidia created the H20 to comply with U.S. export controls that bar sales of its most powerful GPUs to China. Washington reversed an April ban on the model in July, though Nvidia still needs export licences from the U.S. Commerce Department before shipments can resume. Chief Executive Jensen Huang has said any restart of full production would take nine months. The regulatory scrutiny highlights the delicate balance Nvidia faces as it tries to revive Chinese sales while navigating U.S. security rules. Separately, shares of InnoScience Suzhou Technology Holding, a newly identified Nvidia supplier, jumped 31% in Hong Kong trading after the partnership was disclosed.