# Measures To Restrict Stockpiling of Polysilicon and Polysilicon Derivatives Under Proclamation 11052

**Action Urgency Score:** 30/100

| Field | Value |
|---|---|
| Agency | Commerce Department; Industry and Security Bureau |
| Type | Final rule |
| Action | Temporary final rule. |
| Published | 2026-09-24 |
| Effective | 2026-09-22 |
| Significant | No |
| CFR parts | 15 CFR 705 |
| Summary | On August 6, 2026, the President issued Proclamation 11052, "Adjusting Imports of Polysilicon and Its Derivatives Into the United States" (Proclamation 11052), ordering the Secretary of Commerce (Secretary) to take action to restrict imports by a company if he determines the company is stockpiling polysilicon or polysilicon derivatives (Polysilicon Products) in advance of import adjustments that will be effective on December 4, 2026. The Bureau of Industry and Security (BIS), in this temporary final rule (TFR), announces the criteria and process it will use to monitor existing companies for ev |
| Document number | 2026-19537 |

## Why this score
- Final rule.

Source: Federal Register API (Office of the Federal Register) (https://www.federalregister.gov/documents/2026/09/24/2026-19537/measures-to-restrict-stockpiling-of-polysilicon-and-polysilicon-derivatives-under-proclamation-11052). Last refreshed: 2026-11-04T09:17:43.641Z.
Data from the Federal Register API; the published Federal Register document is authoritative. Informational only, not legal advice.