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Base rate computed from analyst-asserted responds_to: edges in the reverse direction (target-country → issuer-country) for prior issuer-actions on the same target. Modal type + lag percentiles only — not a model output. Treat as a historical anchor for sizing counter-response scenarios, not a forecast in itself.
BIS amends EAR Supplement No. 4 to Part 744 by adding 16 entries — 14 under China, 2 under Singapore — all clustered around Sophgo Technologies, a Chinese fabless AI/RISC-V chip designer, and a network of affiliated "Suan-" and "Sophon" front companies that BIS treats as part of the same procurement and design cluster.
License requirement: all items subject to the EAR, license review policy of presumption of denial, no use of license exceptions for items destined to listed parties.
The 16 entries:
China (14): Chengdu Suanze Technology, Fujian Sophon Technology, Fujian Suanxin Technology, Jiangsu Suanxin Technology, Qingdao Sophgo Technology, Quliang Electronics, Shanghai Suanhu Technology, Sophgo Technologies Ltd., Sophon Technology (Beijing), Suanli (Fujian) Technology, Tianjin Shunhua Technology, Wuhan Suanneng Technology, Wuxi Suanneng Technology, Xiamen Sophgo Technologies.
Singapore (2): Sophgo Technologies Pte. Ltd., PowerAir Pte. Ltd. (both treated as offshore extensions of the PRC Sophgo group rather than independent Singapore-domiciled industry).
The Sophgo listing is widely understood as the BIS response to the late-2024 disclosure that TSMC had produced AI chips for Sophgo that were ultimately found in Huawei's Ascend 910B AI accelerator — the same diversion route that triggered the December 2, 2024 HBM/SME entity-list package and a TSMC self-suspension of advanced-node shipments to PRC fabless customers.
The companion rule on the same day — Implementation of Additional Due Diligence Measures for Advanced Computing ICs (FR 2025-00711, IFR) — is the procedural side of the same enforcement push: it requires foundries and OSATs to apply enhanced KYC / red-flag screening before producing advanced-node ICs for fabless customers, precisely the control gap that allowed Sophgo to act as a Huawei pass-through.
package and the same-day FR 2025-00711 advanced-computing IC IFR to close the Huawei-via-fabless-customer diversion route through TSMC and other foreign foundries. Entity List + IFR + due-diligence requirements together remove the plausible-deniability layer that PRC fabless customers were using.
(Sophgo Technologies Pte. Ltd., PowerAir Pte. Ltd.) continue the pattern (also visible in the September 2025 BIS package) of treating Singapore-domiciled subsidiaries of PRC chip groups as offshore extensions of the same enterprise rather than Singapore industry — with implications for Singapore-domiciled compliance burden on contract foundries and OSATs.
filed three days after the AI Diffusion Framework (2025-01-13) and five days before the Trump-era inauguration; reads as Biden-era BIS finalising the advanced-computing perimeter before the administration transition. Subsequent Trump-era packages (2025-03-28 supercomputers, 2025-09-16 32-additions, 2025-10-09 Iran-diversion) build on the same architecture.
enforces the equipment-perimeter narrative even though the Sophgo cluster is fabless / IP-design rather than equipment — closing the customer-side gap that equipment controls alone cannot reach.
ownership chains under the September 30, 2025 affiliates rule (50%-rule entity-list package)? The 16 named entities are likely a subset of the full Sophgo ownership graph.
before the formal entity-list listing, and to what extent does this formalise an existing TSMC self-imposed compliance posture?
warranting an Unreliable Entity List or counter-sanction response, or treat it as routine US chip-perimeter housekeeping not requiring proportional retaliation?