Chinese chip designer Sophgo, a suspected supplier of AI silicon to Huawei, has been added to the USA's "Entity List" of orgs felt to represent a national security risk and therefore prohibited from working with American companies unless a license is issued to allow such dealings.
Sophgo earned a certain notoriety in October 2024 when Taiwanese chipmaker TSMC reportedly stopped building chips for the company after it placed an order for a device that greatly resembled silicon found on Huawei's Ascend 910B AI accelerator. Huawei denied ever doing business with Sophgo, which also denied any association. Both could have been telling the truth : production of hardware is often outsourced and bills of material can vary across different batches of a product. Counterfeit semiconductors are also know to exist making it possible someone slapped Sophgo's name on some components.
Whatever the truth of the matter Sophgo's addition to the List is no surprise because Huawei has been on it for years, and TSMC is bound to flag links to the pariah company or risk fines.
The Bureau of Industry & Security announcement of changes to List [PDF] also mentions an un-named addition that earned its place for "involvement in development of lithography technology for advanced-node fabrication facilities in China." The company's work is felt to help China produce chips for military applications and US policy is not to let the Peoples Liberation Army access advanced computing tech.
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