Enter a 10-digit HTS line, the country of origin and the entry date to see the base rate, 301 / 232 / 201 / 338 additional duties, AD/CVD deposits, PGA flags and other requirements, with a confirmed total and a maximum.
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China: Column 1 rate + 12.5% additional
8-digit subheading 2903.59.90 is not on Lists 1–4B or the four-year-review lists
2903.59.90 was on the 232 list and has been deleted from note 16 (2026-04-06); Other unsaturated fluorinated derivatives of acyclic hydrocarbons
Cash deposits follow the company-specific rate (ACE case module). Coverage depends on each order's scope. The table below lists case numbers, status and the all-others rate. The all-others deposit rate is counted in the maximum exposure, not in the confirmed total.
| Case | Type | Product | Status | All-others rate | Deposit status | Determination |
|---|---|---|---|---|---|---|
| Same investigation: A570137 / C570138 · AD 267.51% + CVD 14.43% = 281.94% counted in the maximum | ||||||
| A570137 Matched on 2903.59.9000 | AD | Pentafluoroethane (R-125) | Order in place | 267.51% | Deposits in effect | 91 FR 10055 (2026-03-02) review opportunity ACE rate eff. 2022-03-01 |
| C570138 Matched on 2903.59.9000 | CVD | Pentafluoroethane (R-125) | Order in place | 14.43% | Deposits in effect | 91 FR 10055 (2026-03-02) review opportunity ACE rate eff. 2022-03-01 |
| Same investigation: A570121 · AD 221.06% | ||||||
| A570121 Matched on 2903.59.9000 | AD | Difluoromethane (R-32) | Order in place | 221.06% | Deposits in effect | 91 FR 10055 (2026-03-02) review opportunity ACE rate eff. 2020-08-27 |
| Same investigation: A570028 · AD 216.37% | ||||||
| A570028 cert. Matched on 2903.59.9000 | AD | Hydrofluorocarbon Blends | Order in place | 216.37% | Deposits in effect | 91 FR 49412 (2026-08-04) review opportunity ACE rate eff. 2016-06-29 |
may-be-required only · ACE valid to 2039-12-31
no entered value: rates and limits only
Period 2026-10-01 – 2027-09-30 · 91 FR 48398 (2026-07-31, Doc. 2026-15530, FY2027)
Chinese origin: the UFLPA presumption is triggered through the supply chain (Xinjiang inputs / Entity List), not by country of origin; the origins with the most CBP denials are MY / VN / TH.
Not in a UFLPA priority sector, and no WRO or Finding applies to this origin. The UFLPA presumption still applies through the supply chain (Xinjiang content or listed entities).
File a positive TSCA certification (complies with all TSCA rules / orders) or a negative certification (pesticides / food / drugs / cosmetics / nuclear material) in ACE when importing chemical substances or mixtures. The EP7 flag is advisory only and the certification is the importer's responsibility. Finished articles are generally exempt unless a specific rule applies. PFAS: one-time reporting of PFAS and PFAS-containing articles imported since 2011.
2025–26: The PFAS reporting window is postponed to 2027-01-31 or 60 days after the final rule (2026-04-13); the 2025-11 proposal to exempt imported articles and ≤0.1% content is not final
Schedule 1: import only from States Parties, 45-day advance notice to BIS, annual report. Schedule 2: import from non-States Parties prohibited, annual report above thresholds. Schedule 3: annual report.
Before arrival: Hold unexpended HCFC consumption allowances; petition via CDX for reclaimed ODS (≥40 working days before departure); intent-to-destroy certification 30 days
At entry: EPA / ODS: allowance holder, substance, quantity, exemption / petition non-objection number; TSCA certification
Disclaim: EP1: A, B; EP2 cannot be disclaimed
If missing: Entry rejected; penalties up to $48,192 per kg
https://www.epa.gov/ods-phaseout/importing-ozone-depleting-substances · Verification M
Before arrival: Confirm the substance is on the TSCA Inventory / complies with §5 / §6 orders; identify negative-certification categories (pesticides, food, drugs, cosmetics, nuclear material)
At entry: TSCA positive / negative certification in the PGA message set (or paper / DIS), with the certifier's name, e-mail and phone
Disclaim: EP7: A, B (§13 only, not Title VI); EP8 cannot be disclaimed
If missing: Refused admission; TSCA penalties
https://www.epa.gov/tsca-import-export-requirements/tsca-requirements-importing-chemicals · Verification H
| A | B | Relation | Rule | Basis |
|---|---|---|---|---|
| FL301 | BASE | stack | Additive to Column 1; EU/TW net-of-MFN to 10%, JP/KR/CH to 12.5% | HTSUS Rev.21 note 52(a), 52(k) |
| FL301 | ADCVD | stack | AD/CVD continue to apply | note 52(a) |
| FL301 | FTA | note | Preference claims do not exempt, except USMCA duty-free (9903.05.93/.94) and CAFTA-DR textiles (9903.05.95) | note 52(a), (g)–(i) |
| FL301 | CH98 | note | Chapter 98 exempt except 9802.00.40/.50/.60 (value of repairs) and 9802.00.80 (value less U.S. content) | note 52(a) |
| ADCVD | BASE | stack | Cash deposits (company-specific) in addition to all Chapter 99 duties; not drawback-eligible | 19 CFR 351; the relevant notes |
Compiled from the HTSUS, the Federal Register, CBP CSMS messages and ACE reports as a classification and compliance reference, not legal advice; file according to current CBP/ACE guidance.