Nvidia B300s Found in China Telecom Network Despite Export Bans

The tension between Washington’s export controls and Beijing’s insatiable hunger for AI power has just tightened again. Israeli security firm Lava announced on October 23 that it has identified 32 Nvidia Blackwell Ultra B300 graphics processing units operating within the infrastructure of China Telecom, a state-owned telecommunications giant. The discovery is significant because these specific chips are currently barred from export to China by U.S. regulations, raising immediate questions about the effectiveness of the current enforcement mechanisms and the pathways through which prohibited hardware is still entering the country.

The presence of the B300s is particularly notable given the strict conditions surrounding their sale. Nvidia’s high-performance data center chips are only available to whitelisted buyers who contractually agree not to sell them to sanctioned parties. Despite these safeguards, the chips have been spotted in a Chinese data center. Lava confirmed the findings using Nvidia’s own DCGM Exporter tool, a software utility designed for data center operators to monitor server health and performance. While intended for internal use, this tool is often accessible from outside the data center’s local network and, in some cases, does not require password authentication, allowing external security firms to scan for specific hardware signatures.

Nvidia has responded to the news with characteristic downplay, refusing to deny the findings but arguing that the volume of smuggled hardware is negligible. A company spokesperson stated that recent court cases show the diversion of controlled U.S. products accounts for less than half of one percent of total shipments. "A drop in the bucket compared to the ocean of domestic compute China already has," the spokesperson said, adding that with tens of millions of GPUs already in service in approved countries, smuggling remains a non-factor. The company emphasized that governments on both sides of the globe are actively blocking these transfers.

The finding adds to a growing pattern of export control breaches. In 2025, reports indicated that Chinese entities smuggled approximately $1 billion worth of Nvidia AI chips into the country over a three-month period, with the B200 models being the primary target. However, distributors were already preparing to move B300-series units once they became available. The B300, announced in March 2025, offers substantial performance upgrades, including 50% more memory and FP4 compute capability than its predecessor. Nvidia marketed the chip as "built for the age of reasoning," specifically highlighting its suitability for advanced large language models.

The logistics of the smuggling operation remain complex and opaque. While it is unclear exactly how the B300s reached China Telecom’s server racks or their specific location within the network, the broader ecosystem of illicit trade is well-documented. In August 2026, nine individuals were indicted in Taiwan for illegally exporting B300 GPUs. This legal action followed an internal investigation at Supermicro, which resulted in the termination of several employees. The smuggling route reportedly involved a Taiwanese server trading firm called Flying Tiget Tech, which held whitelisted status for GPU purchases, illustrating how legitimate business channels can be exploited to move restricted hardware.

The scarcity of these advanced chips has driven up prices for older Nvidia silicon, with five-year-old A100 servers seeing their market value triple to as high as $82,000. This economic pressure has led some organizations to retool gaming GPUs for AI workloads as a cost-effective alternative. As the B300 becomes a hot commodity, the gap between official export controls and on-the-ground reality continues to widen, with Nvidia maintaining that the overall impact on the global supply chain remains minimal despite these high-profile leaks.