Commerce is investigating whether imports of unpatented R-421A (a blend of R-125 and R-134a) from China, further processed into finished HFC blends in the U.S., circumvent the existing AD order on HFC blends (Case A-570-028). The inquiry was triggered by a CBP covered merchandise referral and allegations filed by the American HFC Coalition.

Daily Signals alert

Get relevant trade-policy alerts in Daily Trade Signals.

Subscription scopeDaily Trade SignalsThe daily email, with this source context saved for matching.Only AD/CVDFilter future fragments toward this policy instrument.This HS code or caseFollow changes linked to HS 29.

Subscribes you to Daily Trade Signals and stores this source page, selected scope, and a timestamp for alert matching. Unsubscribe anytime. See our privacy policy.

Review Snapshot

Scope: HS 29 / CN, US / AD/CVD
Question: Does this source change alter exposure, timing, or review priority for HS 29 / CN, US / AD/CVD?
Next move: Check HS 29 in Tariffs, then save the scope if this question repeats.

Legal / Policy Context

Policy instruments

AD/CVD

Practical Takeaways

Check the tagged HS codes in tariff context before treating this as a general market signal.
Use Paths to see adjacent source records, countries, and instruments before escalating this as a standalone change.

Source Trail

CommercePrimary briefing source

Open source