On October 19, the Commerce Department opened a case file that's worth any importer's attention — not for the product involved, but for how the case got there. A domestic manufacturers' group accused an importer of routing Chinese-made diamond sawblades through a United Kingdom affiliate to dodge a 17-year-old antidumping order, and Commerce now has to decide whether that's exactly what happened (Federal Register).
Diamond sawblades aren't a category most of our readers touch directly. But the mechanism behind this case — CBP's Enforce and Protect Act (EAPA) program — reaches a lot further than this one product. If anything in your supply chain has ever carried an antidumping or countervailing duty order — steel, aluminum, textiles, furniture, solar cells, and dozens of other categories — EAPA is the tool CBP uses to chase down whether someone is quietly dodging those duties. And it can catch your entries in the middle of it, even if you've never heard of the company actually under investigation.
Why it matters
EAPA cases aren't abstract. Once CBP opens one, it can suspend liquidation and apply antidumping or countervailing cash-deposit rates to entries while the investigation runs — reaching back as far as a year before the allegation was filed (19 CFR Part 165). If the final determination goes against the importer, back duties come due with interest — on every entry the case covers, not just the ones filed after CBP stepped in.
Here's the part worth sitting with: you don't have to be the one accused to get pulled into a case like this. CBP's own rules define who can file the allegation that starts it broadly — a domestic manufacturer, a trade association, or a competing importer can all trigger an investigation into someone else's imports (19 CFR Part 165). In this case, the allegation came from the Diamond Sawblades Manufacturers' Coalition, a domestic industry group — not from CBP combing through entry data on its own. If your product category carries an active AD/CVD order and a domestic producer thinks your supply chain looks like someone else's workaround, this is the process that gets triggered, often with no advance warning to you.
The details
The case runs through CBP's EAPA Investigation No. 8225, opened after the Diamond Sawblades Manufacturers' Coalition alleged that an importer, Dymatec USA, LLC, was entering Chinese-origin diamond sawblades into the U.S. by routing them through its UK parent, Dymatec, Ltd., while declaring the goods as UK-origin (Federal Register). Nothing has been decided yet — this is an allegation CBP is still working through. CBP couldn't resolve on its own whether UK-assembled sawblades actually fall within the scope of the China antidumping order, so on September 22 it referred the scope question to Commerce — a distinct step under 19 CFR § 351.227 known as a covered merchandise referral.
Commerce is now trying to answer three narrower questions: whether sawblades assembled in the UK are covered by the order when the cutting core and the abrasive segments are (1) both China-origin, (2) only the core is, or (3) only the segments are. The underlying order — covering diamond sawblades and parts from China and South Korea — dates to November 4, 2009, making it one of the oldest antidumping orders still generating enforcement activity.
That covered merchandise referral is a side-question, not CBP's full evasion case. CBP's own evasion process runs on a separate clock: 15 business days to decide whether to open an investigation at all, interim measures within 90 days if it suspects evasion, and up to 300 days (extendable to 360) to reach its own final evasion determination (19 CFR Part 165). Commerce's scope answer feeds into that process, but the clock on this narrower referral doesn't count against CBP's own deadlines.
THE SAWBLADE REFERRAL, AT A GLANCE
Sept. 22, 2026. CBP formally referred the scope question to Commerce after its own EAPA investigation (No. 8225) couldn't resolve it alone.
Nov. 4, 2009. The underlying antidumping order on China and South Korea diamond sawblades — one of the longest-running AD orders CBP still enforces.
Feb. 16, 2027. Commerce's target date for a final determination on whether the UK-assembled sawblades are covered — 120 days from the Oct. 19 notice, extendable for good cause.
What to do about it
Check whether your product category carries an active AD/CVD order. Commerce publishes its full list of orders by product and country; if yours is on it, assume CBP is watching your supply chain the same way it's watching this one.
Get real documentation on where components actually come from. An invoice that just says "assembled in [country]" isn't enough if CBP or Commerce later asks for a bill of materials tracing every input back to its true country of origin — exactly the kind of records this case turns on.
Don't assume you'd know if you were under investigation. Because any domestic manufacturer, trade group, or competitor can file the allegation that opens an EAPA case, your first notice might be a request for information or a suspended liquidation on entries you made months earlier.
Treat a CBP Form 28 or an interim-measures notice as urgent. If one arrives tied to an AD/CVD order, the response window is short and the stakes — back duties plus interest — are real. (See our guide to CBP Form 28 for the mechanics.)
Loop in a customs attorney or licensed broker early if your imports touch a product category with AD/CVD exposure. Scope and covered-merchandise questions turn on technical distinctions — like which specific component came from where — that are easy to get wrong without help.
Keep an eye on
Two dates are worth marking. Interested parties have until Nov. 18, 2026 to comment on Commerce's initiation, with rebuttal comments due 14 days after that. Commerce then intends to issue its final determination by Feb. 16, 2027, though it can extend that deadline for good cause — which, in cases like this, it often does. Either outcome will say something useful about how closely Commerce is willing to scrutinize third-country assembly as a workaround for decades-old antidumping orders.
Got questions? Drop a comment below. Ask our licensed customs brokers, and they'll get right back to you here in the comments.
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