What is the US duty on R-134a from China?
The USITC extract imported on 25 September 2026 stores a general rate of 3.7 percent on HTS 2903.45.10.00. The description names both 1,1,1,2-tetrafluoroethane (HFC-134a) and 1,1,2,2-tetrafluoroethane (HFC-134). The file does not store a separate rate for R-134a alone. That 3.7 percent is the general rate in the file. It is not a China total.
Additional duties on the line are blank, so this file does not store a Section 301 percent. The anti-dumping file lists China case A-570-044 and does not store a cash-deposit percent. This page is the United States file only. It does not state an Australian duty or a ChAFTA percent.
Open 2903.45.10.00 in the duty checkRate stored on the HFC-134a line
Source: USITC Harmonized Tariff Schedule export, updated_at 2026-09-25T11:27:06.251Z, from hts.usitc.gov exportList chapters 28 to 39. The public schedule is at hts.usitc.gov. The unit on the line is kg. It is the only 2903.45 line in the file, and it has no statistical suffix. Heading 2903 in the file reads "Halogenated derivatives of hydrocarbons:".
| HTS | Description | General rate | Special rate | Additional duties |
|---|---|---|---|---|
| 2903.45.10.00 | 1,1,1,2-Tetrafluoroethane (HFC-134a) and 1,1,2,2-tetrafluoroethane (HFC-134) | 3.7% | Free(A, AU, BH,CL, CO, D, E, IL, JO, K, KR, MA, OM, P, PA, PE, S, SG) | blank |
The other column is not shown. It does not apply to goods of China.
The line has one footnote, on the other column: "See 9903.90.08." This extract stops at chapter 39, so heading 9903 is not in the file and no rate from that note is stored. The special-rate text does not name China. This page does not treat Free as a China rate, and it does not apply the 25 percent other rate to a China shipment.
HTS 3827.64.00.00 is a different line. It stores 3.7 percent on mixtures containing 30 percent or more by mass of HFC-134a, and it is not 2903.45.10.00. Section 301 stays on the USTR Section 301 page.
China cases in the anti-dumping file
Source: the US AD/CVD file, updated_at 2026-05-16T23:32:23.566Z, 154 entries, drawn from the Trade.gov China scope index. The binding cash-deposit rate is on ACCESS. Both rows below set duty_rate_percent to null and set the rate text to "verify per case file on access.trade.gov before invoicing".
| Case | Type | Product in the file | HS tag | Cash-deposit percent |
|---|---|---|---|---|
| A-570-044 | anti-dumping | 1,1,1,2-Tetrafluoroethane (R-134a) | 2903 | not stored |
| A-570-028 | anti-dumping | Hydrofluorocarbon blends | 2903, 3824 | not stored |
Exporting country on both rows is China. The manufacturer field on each reads "All exporters (cooperative-exporter list per case file)". Sunset status on each reads "five-year-review-cycle". The file does not store an order date or an expiry date. It does not list a countervailing case for either product. That gap is not a finding that no countervailing order exists. These two rows are the only heading 2903 rows in the file. The R-134a product text does not name HFC-134. The blends product text does not name R-134a. Heading 3827 is not a tag on either row.
Frequently asked
What is the US duty on R-134a from China?
The USITC extract imported on 25 September 2026 stores a general rate of 3.7 percent on HTS 2903.45.10.00. The description names both 1,1,1,2-tetrafluoroethane (HFC-134a) and 1,1,2,2-tetrafluoroethane (HFC-134). The file does not store a separate R-134a rate. That 3.7 percent is the general rate in the file, not a China total. Additional duties are blank, so this file does not store a Section 301 percent. Anti-dumping case A-570-044 stores no cash-deposit percent.
Does the 3.7 percent include Section 301?
No. additional_duties on 2903.45.10.00 is blank. Section 301 list membership and the extra percent are not in this file. Read the line on hts.usitc.gov and the USTR Section 301 page before you quote.
Is there a US anti-dumping case on R-134a from China?
The file dated 16 May 2026 lists anti-dumping case A-570-044. The product text is 1,1,1,2-Tetrafluoroethane (R-134a), the exporting country is China, and the HS tag is 2903. duty_rate_percent is null. The file does not list a countervailing case on that product. The cash-deposit rate is on the ACCESS case file.
Does the R-134a case cover HFC blends?
The R-134a row does not say that. A separate row, A-570-028, names Hydrofluorocarbon blends and tags headings 2903 and 3824. That row also stores no cash-deposit percent. It is not the R-134a product text.
Want a real price from a checked factory?
Tell us the chemical, grade and quantity. A person on our team in Shanghai sends you a real, checked factory, and your first one is free.
Sourzi shows what official files say. It is not customs or legal advice. For a binding answer, ask a licensed customs broker, a CBP ruling or an Australian Border Force Tariff Advice.
File dates and links are on Data sources.