CBP Opens Testing for Polysilicon Duties: Minimum Import Price of $21 per Kilogram Takes Effect December 4
U.S. Customs and Border Protection (CBP) announced on November 12, in a Cargo Systems Messaging Service (CSMS) bulletin, that it has activated testing for duties on polysilicon and its derivatives in the certification environment of the Automated Commercial Environment (ACE), so traders can submit test entries before the duties take effect on December 4.
On August 6, 2026, the President issued Proclamation 11052, imposing additional duties and minimum import prices on certain imports of polysilicon and its derivatives, effective December 4, 2026.
Four simulated Chapter 99 classifications are available for testing. Under the minimum-price calculation, the floor is $21 per kilogram for polysilicon (HTSUS 2804.61.00) and $0.22 per watt for products under HTSUS 8541.42.00; when the entered unit value is below the floor, the tariff equals the total minimum import price minus the entered value, and is reported as zero when the unit value meets or exceeds the floor. Two further classifications test the same amounts as specific tariff rates.
CBP stressed that the listed classifications are simulated and unofficial and must not be used for actual entry filing; official classifications will be announced in the production environment before December 4. CBP also updated its duty-calculation guidance and recommended that the trade community submit test entries to ensure readiness.
(Source: U.S. Customs and Border Protection)
Source: U.S. Customs and Border Protection
Published by GSM · USA (original Chinese edition)
Photo: 图：美国海关与边境保护局总部大楼。GSM 固定图库照片。 / Photo: U.S. Customs and Border Protection headquarters. GSM fixed image library.
