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 3827.68.00 is on L3
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 3827.68.0000 | 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 3827.68.0000 | 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 3827.68.0000 | 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 3827.68.0000 | 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 |
includes a required flag · 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: The importer is linked to an allowance holder account with sufficient consumption allowances (expended at import); non-objection notice for transformation / destruction; transshipment confirmation
At entry: EPA / HFC: ASHRAE number or CAS + percentage, importer, container number, net weight in kg, TSCA certification; DIS: certificate of analysis, EPA notice
Disclaim: EH1: only A; EH2 cannot be disclaimed
If missing: Entry rejected (invalid CAS / ASHRAE, no allowance link, insufficient allowances); EPA may revoke allowances
2025–26: 2026 allowance allocation (FR 2025-11-20); Technology Transitions GWP limits from 2025-01-01, first annual report 2026-03-31; EPA supplemental guide v18 (2025-04)
https://www.federalregister.gov/documents/2025/11/20/2025-20439 · Verification H
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 | CN301 | stack | Stacks with China 301 | note 52(a) |
| 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) |
| CN301 | BASE | stack | Additive to Column 1 | note 20(a)/(c)/(e)/(g)/(r); note 31(a) |
| CN301 | ADCVD | stack | AD/CVD continue | note 20 / 31 |
| CN301 | FTA | note | Preference claims do not exempt | note 20 / note 31(a) |
| CN301 | CH98 | note | Chapter 98 exempt except 9802.00.40/.50/.60/.80 | note 20 paragraphs / note 31(a) |
| CN301 | CN301 | note | Four-year-review products removed from note 20 lists (no double 25%); chassis and STS cranes stack with maritime 301 from 2026-11-10 | Rev.21 note 20 / 31 comparison; note 31(k)/(l) |
| 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.