Trade updates · The White House · Proclamation 11052
Adjusting Imports of Polysilicon and Its Derivatives Into the United States
Published August 6, 2026 · effective December 4, 2026, 12:01 AM Eastern.
In TariffTrust's data
Applied ahead of the tariff Applied ahead of the USITC tariff: the duties it sets are marked as resting on it.
What it changes
| Heading | Measure | Rate | Countries | Products | In effect |
|---|---|---|---|---|---|
| 9903.45.30 | Section 201 safeguard — quartz surface products, within the quota | 23% of the quartz value | All but AF, AG, AL, AM, AO, AU, AW, AZ, BA, BB, BF, BI, BJ, BO, BR, BS, BT, BW, BZ, CA, CD, CF, CG, CI, CM, CO, CR, CV, CW, DJ, DM, DO, DZ, EC, EG, ER, ET, FJ, GA, GD, GE, GH, GM, GN, GT, GW, GY, HN, HT, ID, IL, IQ, JM, JO, KE, KG, KH, KI, KM, KN, KR, KZ, LB, LC, LK, LR, LS, MD, ME, MG, MK, ML, MM, MN, MR, MS, MU, MV, MW, MX, MZ, NA, NE, NG, NI, NP, PA, PE, PG, PH, PK, PY, RS, RW, SB, SG, SL, SN, SO, SR, SS, ST, SV, SZ, TD, TG, TL, TN, TO, TT, TV, TZ, UA, UG, UZ, VC, VG, VU, WS, XK, YE, ZA, ZM, ZW | 3 codes | From 2027-08-15 through 2028-08-14 |
| 9903.45.30 | Section 201 safeguard — quartz surface products, within the quota | 21% of the quartz value | All but AF, AG, AL, AM, AO, AU, AW, AZ, BA, BB, BF, BI, BJ, BO, BR, BS, BT, BW, BZ, CA, CD, CF, CG, CI, CM, CO, CR, CV, CW, DJ, DM, DO, DZ, EC, EG, ER, ET, FJ, GA, GD, GE, GH, GM, GN, GT, GW, GY, HN, HT, ID, IL, IQ, JM, JO, KE, KG, KH, KI, KM, KN, KR, KZ, LB, LC, LK, LR, LS, MD, ME, MG, MK, ML, MM, MN, MR, MS, MU, MV, MW, MX, MZ, NA, NE, NG, NI, NP, PA, PE, PG, PH, PK, PY, RS, RW, SB, SG, SL, SN, SO, SR, SS, ST, SV, SZ, TD, TG, TL, TN, TO, TT, TV, TZ, UA, UG, UZ, VC, VG, VU, WS, XK, YE, ZA, ZM, ZW | 3 codes | From 2028-08-15 through 2029-08-14 |
| 9903.45.30 | Section 201 safeguard — quartz surface products, within the quota | 19% of the quartz value | All but AF, AG, AL, AM, AO, AU, AW, AZ, BA, BB, BF, BI, BJ, BO, BR, BS, BT, BW, BZ, CA, CD, CF, CG, CI, CM, CO, CR, CV, CW, DJ, DM, DO, DZ, EC, EG, ER, ET, FJ, GA, GD, GE, GH, GM, GN, GT, GW, GY, HN, HT, ID, IL, IQ, JM, JO, KE, KG, KH, KI, KM, KN, KR, KZ, LB, LC, LK, LR, LS, MD, ME, MG, MK, ML, MM, MN, MR, MS, MU, MV, MW, MX, MZ, NA, NE, NG, NI, NP, PA, PE, PG, PH, PK, PY, RS, RW, SB, SG, SL, SN, SO, SR, SS, ST, SV, SZ, TD, TG, TL, TN, TO, TT, TV, TZ, UA, UG, UZ, VC, VG, VU, WS, XK, YE, ZA, ZM, ZW | 3 codes | From 2029-08-15 through 2030-08-14 |
| 9903.45.30 | Section 201 safeguard — quartz surface products, within the quota | 15% | All but AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IT, JP, KR, LI, LT, LU, LV, MT, NL, PL, PT, RO, SE, SI, SK, TW | 7 codes | From 2026-12-04 |
| 9903.45.31 | Section 201 safeguard — quartz surface products, beyond the quota | 49% of the quartz value | All but AF, AG, AL, AM, AO, AU, AW, AZ, BA, BB, BF, BI, BJ, BO, BR, BS, BT, BW, BZ, CA, CD, CF, CG, CI, CM, CO, CR, CV, CW, DJ, DM, DO, DZ, EC, EG, ER, ET, FJ, GA, GD, GE, GH, GM, GN, GT, GW, GY, HN, HT, ID, IL, IQ, JM, JO, KE, KG, KH, KI, KM, KN, KR, KZ, LB, LC, LK, LR, LS, MD, ME, MG, MK, ML, MM, MN, MR, MS, MU, MV, MW, MX, MZ, NA, NE, NG, NI, NP, PA, PE, PG, PH, PK, PY, RS, RW, SB, SG, SL, SN, SO, SR, SS, ST, SV, SZ, TD, TG, TL, TN, TO, TT, TV, TZ, UA, UG, UZ, VC, VG, VU, WS, XK, YE, ZA, ZM, ZW | 3 codes | From 2027-08-15 through 2028-08-14 |
| 9903.45.31 | Section 201 safeguard — quartz surface products, beyond the quota | 48% of the quartz value | All but AF, AG, AL, AM, AO, AU, AW, AZ, BA, BB, BF, BI, BJ, BO, BR, BS, BT, BW, BZ, CA, CD, CF, CG, CI, CM, CO, CR, CV, CW, DJ, DM, DO, DZ, EC, EG, ER, ET, FJ, GA, GD, GE, GH, GM, GN, GT, GW, GY, HN, HT, ID, IL, IQ, JM, JO, KE, KG, KH, KI, KM, KN, KR, KZ, LB, LC, LK, LR, LS, MD, ME, MG, MK, ML, MM, MN, MR, MS, MU, MV, MW, MX, MZ, NA, NE, NG, NI, NP, PA, PE, PG, PH, PK, PY, RS, RW, SB, SG, SL, SN, SO, SR, SS, ST, SV, SZ, TD, TG, TL, TN, TO, TT, TV, TZ, UA, UG, UZ, VC, VG, VU, WS, XK, YE, ZA, ZM, ZW | 3 codes | From 2028-08-15 through 2029-08-14 |
| 9903.45.31 | Section 201 safeguard — quartz surface products, beyond the quota | 47% of the quartz value | All but AF, AG, AL, AM, AO, AU, AW, AZ, BA, BB, BF, BI, BJ, BO, BR, BS, BT, BW, BZ, CA, CD, CF, CG, CI, CM, CO, CR, CV, CW, DJ, DM, DO, DZ, EC, EG, ER, ET, FJ, GA, GD, GE, GH, GM, GN, GT, GW, GY, HN, HT, ID, IL, IQ, JM, JO, KE, KG, KH, KI, KM, KN, KR, KZ, LB, LC, LK, LR, LS, MD, ME, MG, MK, ML, MM, MN, MR, MS, MU, MV, MW, MX, MZ, NA, NE, NG, NI, NP, PA, PE, PG, PH, PK, PY, RS, RW, SB, SG, SL, SN, SO, SR, SS, ST, SV, SZ, TD, TG, TL, TN, TO, TT, TV, TZ, UA, UG, UZ, VC, VG, VU, WS, XK, YE, ZA, ZM, ZW | 3 codes | From 2029-08-15 through 2030-08-14 |
| 9903.45.31 | Section 201 safeguard — quartz surface products, beyond the quota | 15% in all | LI, JP, KR, CH, TW, AT, BE, BG, HR, CY, CZ, DK, EE, FI, FR, DE, GR, HU, IE, IT, LV, LT, LU, MT, NL, PL, PT, RO, SK, SI, ES, SE | 7 codes | From 2026-12-04 |
| 9903.45.32 | Section 232 — polysilicon derivatives of the United Kingdom, 10 percent | 10% | GB | 7 codes | From 2026-12-04 |
Each measure as TariffTrust reads the official texts, each with its source. What a product owes depends on all the measures that apply to it: calculate it.
Official documents
- The White House · Aug 6, 2026 Adjusting Imports of Polysilicon and its Derivatives into the United States ↗
- Annex · Aug 6, 2026 ANNEX-I.pdf ↗
- Annex · Aug 6, 2026 Annex-II.pdf ↗
- Federal Register · Aug 11, 2026 Adjusting Imports of Polysilicon and Its Derivatives Into the United States ↗
The official text prevails. A publication alone does not establish applicability to a product.