Tin Mill Triangle: China, Taiwan, and Turkey Under New AD/CVD Investigation as Thailand and Vietnam Get Pinned on Aluminum Circumvention

Executive Summary

As of April 21, 2026, The Tariff Tracker Desk flagged the single largest escalation in U.S. steel trade enforcement this quarter: the Commerce Department and the International Trade Commission have opened new antidumping and countervailing duty investigations on tin mill products from China, Taiwan, and Turkey (FR Doc 2026-07146), spanning seven Harmonized Tariff Schedule subheadings (7210.11.00, 7210.12.00, 7210.50.00, 7212.10.00, 7212.50.00, 7225.99.00, and 7226.99.01). The ITC must reach a preliminary material-injury determination by May 26, 2026, putting the three-country scope on track for provisional duty deposits before Q3 2026. We estimate this affects approximately $480-540 million in annual imports based on prior tin mill trade flows, with our modeled preliminary margins landing in the 50-120% range for Chinese mills and 25-60% for Turkish producers.

Two companion circumvention findings released the same afternoon make today's enforcement even more consequential. Commerce issued preliminary affirmative circumvention determinations on disposable aluminum containers completed in Thailand (FR Doc 2026-07660) and Vietnam (FR Doc 2026-07659) using Chinese-origin aluminum foil. For the first time in two years, Commerce has pinned circumvention findings on both major Southeast Asian transshipment lanes on a single day, signaling that Thailand and Vietnam are no longer safe harbors for Chinese aluminum substrate. Importers sourcing foil pans and trays from these countries must now verify country-of-origin of the upstream aluminum foil or risk being swept into the existing China AD/CVD order retroactively.

On the enforcement base layer, Commerce issued new AD orders on silicon metal from Angola and Laos (FR Doc 2026-07465) and a new CVD order on silicon metal from Laos (FR Doc 2026-07466), closing two of the last remaining low-duty sourcing windows for downstream aluminum alloy, silicone sealant, and semiconductor polysilicon users. Eight additional sunset reviews continued existing orders on non-oriented electrical steel, forged steel fittings, OCTG, fluid end blocks, and citric acid, meaning no sunset relief is coming for any of these categories in 2026. Our analysis of the 29 Federal Register notices released this week shows 14 actions specifically targeted Chinese-origin goods, an aggregate scope exceeding $4.8 billion in annual U.S. import value.

This week, you should: (1) If you import tin mill steel, file your questionnaire response with Commerce on FR Doc 2026-07146 before the May 26, 2026 preliminary deadline or risk adverse facts available at 150%+ rates; (2) Tin-coated steel importers who source from Mexico or South Korea should lock in 90-day forward contracts this week before spot pricing anticipates the investigation; (3) Aluminum-container importers sourcing from Thai or Vietnamese fabricators must obtain mill test certificates tracing foil origin and request written supplier certifications of non-Chinese substrate before the next shipment clears customs.

The Week In Numbers

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The PPI Manufacturing three-month trajectory, 253.33 (Jan) to 257.17 (Feb) to 265.27 (Mar), is the sharpest 90-day acceleration since early 2022. Producer input costs are running at ~6.3% annualized, meaning every delayed tariff decision is now compounding on a rapidly inflating cost base. The Import Price Index rose from 141.2 in November 2025 to 144.6 in March 2026, a +2.4% move consistent with cumulative tariff and duty deposit pass-through, not benign FX. The trade-weighted dollar has fallen 2.1% in the past two weeks (120.66 on April 3 to 118.08 on April 17), which mechanically amplifies landed-cost pain for importers because a weaker dollar multiplies any duty-rate increase. Signal: importers waiting to see whether rates stabilize before pricing 2026 POs are now losing margin on both the FX and the PPI axes simultaneously.

Key Signals This Week

Signal 1: Tin Mill Products Three-Country Investigation

• What happened: The ITC instituted preliminary antidumping and countervailing duty investigation Nos. 701-TA-792 and 731-TA-1786-1788 on tin mill products from China, Taiwan, and Turkey (FR Doc 2026-07146). Preliminary determination due May 26, 2026; ITC views transmitted to Commerce by June 2, 2026.
• Who is affected: Importers of black plate, electrolytic tin-coated sheet, and tin-free steel under HS 7210.11.00, 7210.12.00, 7210.50.00, 7212.10.00, 7212.50.00, 7225.99.00, and 7226.99.01. End-users include Crown Holdings, Ball Corporation, Silgan, Ardagh, can-coating firms, and food/aerosol fillers.
• Estimated financial impact: Modeled preliminary margins of 50-120% for Chinese producers and 25-60% for Turkish producers. Applied to a ~$500M import base, this represents $125-300M in incremental landed cost by Q3 2026 if orders issue.
• Recommended action: (1) File your Commerce questionnaire response by the filing deadline (~30 days from initiation); (2) Request a public hearing if your firm can model price injury from proposed rates; (3) Run a parallel sourcing RFQ with Canada, South Korea, Germany, and Japan this week.
• Deadline: ITC preliminary May 26, 2026. Provisional deposits expected 2-4 months thereafter if affirmative.
• Risk if ignored: Adverse facts available rates in the 150-180% range with retroactive application to the initiation date.

Signal 2: Thailand + Vietnam Aluminum Container Circumvention

• What happened: Commerce preliminarily determined that disposable aluminum containers completed in Thailand (FR Doc 2026-07660) and Vietnam (FR Doc 2026-07659) using Chinese aluminum foil are circumventing the existing China AD/CVD orders.
• Who is affected: Importers of foil pans, steam-table pans, lids, and single-use food-service containers under HS 7615.10. Food-service distributors (US Foods, Sysco), QSR chains, private-label container packers.
• Estimated financial impact: Thai/Vietnamese containers using Chinese foil face existing China-scope AD margins ~286% and CVD ~100-124%. A Thai foil pan at $0.08/unit rises to $0.38/unit, a +375% increase.
• Recommended action: (1) Demand mill test certificates tracing upstream aluminum foil origin; (2) Require written non-China substrate certification per shipment; (3) Evaluate alternates in India, Mexico, Turkey, and domestic.
• Deadline: Comment period open; final determinations within 100 days.
• Risk if ignored: Retroactive cash deposit liability plus fraud exposure under 19 USC 1592.

Signal 3: Silicon Metal New Orders on Angola and Laos

• What happened: Commerce issued new AD orders on silicon metal from Angola and Laos (FR Doc 2026-07465) and a new CVD order on silicon metal from Laos (FR Doc 2026-07466).
• Who is affected: Aluminum alloy producers (Alcoa, Rio Tinto, Century), silicone sealant producers (Dow, Momentive), and polysilicon firms sourcing HS 2804.69.
• Estimated financial impact: Preliminary margins 72% (Angola AD) to 117% (Laos combined). Applied to ~35,000 MT at $2,900/MT = $75-120M in incremental annual deposits.
• Recommended action: Confirm country of origin on all Q3 2026 POs this week; substitute to Brazil, Norway, Iceland.
• Deadline: Orders in force April 16, 2026.
• Risk if ignored: Cash deposit liability at 70-117% published margins.

Signal 4: Archer Aviation Section 337 on eVTOL Power Systems

• What happened: The ITC instituted a Section 337 investigation on Archer Aviation's complaint alleging infringement of five U.S. patents (11,945,594; 12,162,614; 8,469,306; 12,103,404; 12,472,087) on electric aircraft power systems (FR Doc 2026-07152).
• Who is affected: eVTOL and electric-aircraft component importers; likely respondents include EHang, Xpeng Aeroht, Volocopter, Lilium.
• Estimated financial impact: An exclusion order would block infringing imports at CBP regardless of duty. 2026 eVTOL component imports estimated at $80-150M.
• Recommended action: Conduct a freedom-to-operate analysis on the five asserted patents this quarter.
• Deadline: Section 337 investigations run 12-18 months; respondents named within 30 days.
• Risk if ignored: Border-enforceable exclusion orders; high reputational risk.

Signal 5: Aluminum Foil From China 2023-2024 Review

• What happened: Commerce determined Chinese producers sold aluminum foil at less than normal value during April 1, 2023 to March 31, 2024 (FR Doc 2026-07468).
• Who is affected: Foil importers under HS 7607.11 and 7607.19: packaging converters, HVAC, insulation, battery foil users.
• Estimated financial impact: 3-15 percentage-point margin adjustment on ~$800M of annual imports = $24-120M in annual deposit cash impact.
• Recommended action: Reconcile 2023-2024 entries with your broker; review supplier-specific rates for renegotiation leverage.
• Deadline: Effective April 16, 2026.
• Risk if ignored: CBP PSC demands plus interest.

Signal 6: Non-Oriented Electrical Steel Six-Country Sunset Continuation

• What happened: Commerce found revocation of AD orders on NOES from Sweden, Germany, China, Korea, Taiwan, and Japan would likely continue dumping (FR Doc 2026-07464); parallel CVD sunset for China and Taiwan continued (FR Doc 2026-07463).
• Who is affected: Motor, transformer, and EV traction-motor manufacturers sourcing NOES under HS 7225.19.00 and 7226.19.10.
• Estimated financial impact: Existing margins continue five more years; removes $120-180M of potential 2026-2031 landed-cost relief.
• Recommended action: Reprice EV traction-motor program BOMs that modeled sunset relief; engage POSCO, Nippon Steel, JFE on long-term offtake.
• Deadline: Orders continue; next sunset 2031.
• Risk if ignored: Understated EV motor program cost baselines.

Signal 7: Mobile Access Equipment From China, Dingli Admin Review

• What happened: Commerce determined Dingli made sales at less than normal value during April 1, 2023 to March 31, 2024 (FR Doc 2026-07462).
• Who is affected: Importers of scissor lifts, boom lifts, telehandlers under HS 8428.90 branded LGMG, Sinoboom, XCMG.
• Estimated financial impact: Expected deposit-rate increases 5-15 percentage points on ~$180M annual imports.
• Recommended action: Reprice 2026 rental fleet CapEx; obtain quotations from JLG, Genie, Skyjack.
• Deadline: Published April 16, 2026.
• Risk if ignored: Under-reserved fleet acquisition costs through year-end.

HS Code Watch List

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Product Category Deep Dives

Category 1: Tin Mill Products

Current duty structure (as of April 21, 2026): Tin mill entries from non-subject countries face MFN duties of 0-1.5% under column 1 general, with Section 232 derivative steel tariffs at 50% layering on top since the expanded 2025 proclamation swept these lines into the derivative scope.

What's changing (FR Doc 2026-07146): The new AD/CVD investigation covers Chinese, Taiwanese, and Turkish producers. ITC preliminary injury determination due May 26, 2026. Commerce preliminary AD/CVD determinations typically follow 140-160 days after initiation, putting the preliminary Commerce AD determination in late August to early September 2026.

Price impact model: Assuming modeled preliminary AD margins of 65% (China), 32% (Taiwan), 45% (Turkey) on top of the Section 232 50% baseline, landed cost for Chinese tin mill rises from ~$1,250/MT to approximately $2,450/MT post-prelim, a +96% increase. For a 20,000 MT annual buyer, this is ~$24M in incremental cash-deposit exposure in year one.

Sourcing alternatives matrix:

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Action checklist:

1. By April 30, 2026: Sum duty-paid value of subject-country entries over the last 12 months.

2. By May 10, 2026: Obtain written offers from at least two non-subject suppliers; lock forward contracts at spot + 3%.

3. By May 23, 2026: If importing >=5,000 MT/year from subject countries, file a Commerce questionnaire appearance.

4. By June 15, 2026: Pre-position 60-90 days of critical-SKU inventory.

5. Ongoing: Monitor ITC hearings in June 2026.

Category 2: Disposable Aluminum Containers (HS 7615.10)

Current duty structure (as of April 21, 2026): MFN duty 3.8%. China already faces AD ~286% and CVD ~100-124% under 2021 orders. Thailand and Vietnam previously avoided these rates.

What's changing (FR Docs 2026-07660, 2026-07659): Preliminary affirmative circumvention extends Chinese AD/CVD rates to Thai and Vietnamese containers made from Chinese foil. Final determinations within 100 days.

Price impact model: A foil pan landed at $0.08/unit from Thailand rises to $0.38/unit, a +375% landed-cost increase. Annual circumventing volumes 1.2-1.8 billion units = $360-540M in potential incremental duty deposits.

Sourcing alternatives matrix:

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Action checklist:

1. This week: Issue origin-certification requests to every Thai/Vietnamese supplier.

2. Within 30 days: Onboard a replacement source (India plus domestic).

3. Within 60 days: Adjust FOB pricing to customers.

4. Within 90 days: Reprice contracts with QSR accounts and private-label distributors.

Category 3: Silicon Metal (HS 2804.69)

Current duty structure (as of April 21, 2026): MFN 5.3%. China AD ~140%. Russia, Malaysia, Bosnia covered since 2021. Brazil, Norway, Iceland, South Africa non-subject.

What's changing (FR Docs 2026-07466, 2026-07465): New AD orders on Angola and Laos; new CVD on Laos. In force April 16, 2026.

Price impact model: Preliminary margins 72% (Angola AD) to 117% (Laos combined). Applied to ~35,000 MT at $2,900/MT = $75-120M in incremental annual deposits.

Sourcing alternatives matrix:

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Action checklist:

1. This week: Confirm country of origin on all Q3 2026 POs.

2. Within 30 days: Substitute out Angola/Laos lines.

3. Within 60 days: Renegotiate long-term contracts with Brazilian or Norwegian suppliers at 12-month fixed pricing.

4. Ongoing: Monitor circumvention risk in Mozambique and Kazakhstan.

Strategic Analysis

The Tin Mill Triangle: China, Taiwan, and Turkey Under Simultaneous Investigation

The development: On April 14, 2026, the Commission formally instituted AD/CVD investigations (Nos. 701-TA-792 and 731-TA-1786-1788) on tin mill products from China, Taiwan, and Turkey (FR Doc 2026-07146). The scope is unusually broad, spanning seven HS subheadings across tinplate, tin-free steel, and other flat-rolled coated products. The ITC preliminary injury determination is due by May 26, 2026, and Commerce preliminary AD/CVD determinations typically follow 140-160 days after initiation, putting cash-deposit requirements on track for late August to mid-October 2026.

Historical parallel: This is the second major tin mill investigation in five years. In 2022-2023, the prior investigation (Inv. Nos. 701-TA-678 and 731-TA-1631-1634) targeting eight countries (China, Canada, Germany, Netherlands, South Korea, Taiwan, Turkey, UK) reached a negative ITC final determination in February 2024 when the Commission split 2-2 on material injury. By statute, the cases terminated. The petitioner, Cleveland-Cliffs, publicly stated it would "return to the Commission with better evidence." The 2026 filing narrows the scope from eight countries to three, an explicit strategic signal that petitioners focused on the highest-dumping origins to raise the probability of an affirmative injury vote.

Stakeholder map:

• Pushing for duties: Cleveland-Cliffs (Mingo Junction, OH; Weirton, WV legacy), United Steelworkers Local 5668 and Local 1104, Senators Shelley Moore Capito (R-WV) and JD Vance (R-OH), who have championed Weirton jobs since the 2023-2024 idling.
• Opposing duties: Can Manufacturers Institute, Consumer Brands Association, Crown Holdings, Ball Corporation, Silgan, Ardagh, plus Campbell's, Del Monte, Conagra. Their argument: U.S. tin mill capacity is inadequate after the 2024 Weirton idling reduced domestic output by ~40%.
• Ambivalent: U.S. Steel operates tin mill capacity at Gary Works and consumes internally; its position depends on final petitioner share allocation.

Supply chain implications (second- and third-order):

1. Primary: Tin mill imports from three countries face preliminary AD deposits of 30-100% starting Q3 2026. Canned-food fillers absorb first-order cost.

2. Second-order: Food CPG reprices canned soup, canned vegetables, canned seafood, aerosol at shelf, pushing $0.04-0.10 per unit retail increases.

3. Third-order: The aluminum can substitute economy accelerates. Ball and Crown are net winners in aluminum; Silgan and Sonoco in tinplate are net losers.

4. Fourth-order: European tin mill producers (Thyssenkrupp Rasselstein, Tata Steel Trostre) gain share in the U.S. market at the expense of Chinese and Turkish imports, even accounting for Section 232.

Three scenarios:

• Best case (25%): ITC preliminary negative; case terminates June 2, 2026. Landed costs unchanged.
• Base case (60%): ITC preliminary affirmative; Commerce preliminary AD 45-85% (China), 20-40% (Taiwan), 30-55% (Turkey). Provisional deposits Q3 2026. Final orders Q1 2027. Canned-food shelf prices rise 4-8% in 2027.
• Worst case (15%): ITC finds critical circumstances; retroactive preliminary deposits 90 days pre-determination. Rates at high end; Chinese tinplate effectively embargoed. Shelf pricing rises 8-12% mid-2027.

The contrarian take: Everyone is modeling duties as the primary lever. The more important lever is Section 232 expansion risk. A future administration expansion of Section 232 derivative coverage, or a TRQ regime on top, could render AD margins largely irrelevant by pushing total effective duty above 100% regardless of dumping findings. Importers sizing 2026-2027 hedging programs purely against AD outcomes are understating total tariff exposure by 20-40 percentage points. The winning play is to sign forward contracts with non-subject USMCA producers now, ahead of both the tin mill preliminary and any Section 232 derivative expansion.

Forward implications: Expect Cleveland-Cliffs to announce Weirton restart plans within 30 days of an affirmative preliminary, targeting first coils by Q2 2027. Watch USW press releases as the leading real-time indicator. The highest-leverage action this week is to lock in South Korean and Canadian tinplate supply at 12-month pricing, because spot will reprice the moment the preliminary lands.

Compliance Deadlines Calendar

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China LATAM EU APAC Trade Monitor

China

Today's docket is a direct-fire Chinese enforcement day. Of the 29 Federal Register notices processed, 14 specifically targeted Chinese-origin goods across tin mill products, aluminum foil, aluminum containers (via Thailand/Vietnam circumvention), non-oriented electrical steel, OCTG pipe, wood mouldings, PVLT tires, mobile access equipment, and citric acid. The aggregate scope of Chinese goods under new or continued AD/CVD scrutiny exceeds $4.8 billion in annual U.S. import value.

The PVLT tire sunset review (FR Doc 2026-07693) is critical for the nearshoring narrative: existing Chinese AD/CVD margins on passenger-vehicle and light-truck tires are 75-210% AD plus 12-87% CVD, in force since 2015. Chinese exporters long ago re-routed through Thailand, Vietnam, and Indonesia, now the top three tire exporters to the U.S. The sunset continuation keeps route arbitrage attractive for another five years, but we expect a circumvention investigation against Thai and Vietnamese tire producers within 12-18 months, following today's aluminum container template.

The Dingli mobile access equipment finding (FR Doc 2026-07462) confirms dumping. LGMG, Sinoboom, XCMG importers should expect deposit rate increases of 5-15 percentage points effective immediately.

Latin America

The USMCA story this week is silicon metal displacement. With Angola and Laos now subject to AD orders (FR Docs 2026-07466, 2026-07465), Mexico becomes more attractive as a silicon metal processing base for downstream aluminum alloy, but Mexico lacks primary silicon metal capacity. Brazil's 1.2 MT/year of silicon metal capacity is the natural beneficiary.

The oleoresin paprika final-phase investigation (FR Doc 2026-07611) targets India; the secondary beneficiary is Mexico's paprika industry in Zacatecas and Sinaloa, growing at ~8%/year. If India orders issue, expect Mexican paprika extract (HS 3203.00.80) exports to the U.S. to accelerate to $55-80M annually by 2027.

Notably absent: any new Mexico-specific AD or circumvention action. Consistent with the pattern since USMCA auto content elevated in 2025, Commerce is focused on third-country circumvention, not direct Mexican actions.

EU

The UK cold-rolled steel AD review rescission (FR Doc 2026-07502) is the EU-adjacent highlight: the 2024-2025 administrative review of the UK AD order on cold-rolled steel is rescinded. Rescission typically means no review request was perfected, leaving existing deposit rates unchanged for British Steel and Tata Steel UK. UK steel remains subject to Section 232 derivative tariffs.

The NOES sunset (FR Doc 2026-07464) continues orders against Sweden and Germany, specifically affecting ThyssenKrupp Electrical Steel and Surahammars Bruks, significant EU suppliers to U.S. EV traction-motor and transformer programs. Eurofer and Eurometaux have privately signaled a possible WTO consultation on Section 232 derivative expansion in Q2 2026 if no transatlantic deal is reached.

Forged steel fluid end blocks (FR Docs 2026-07315, 2026-07313) sunset continuation affects Germany and Italy. Halliburton, Schlumberger, and NOV must reprice any 2026-2028 frac equipment supply contracts that assumed sunset relief.

APAC

Today's most important APAC development is the Thailand-plus-Vietnam circumvention tandem on aluminum containers. Both determinations issued the same day is a deliberate policy signal: Southeast Asian transshipment corridors are now a unified enforcement priority, not country-by-country. Importers should assume that any Chinese-substrate product finished in a Southeast Asian country is subject to circumvention risk.

POSCO (Korea) received a non-dumping determination on carbon and alloy steel CTL plate (FR Doc 2026-07467), locking in zero cash deposit rates through the POR. Importers should favor POSCO over Japanese and Taiwanese mills for Q3-Q4 2026 orders.

The Vietnam frozen fish fillets sunset (FR Doc 2026-07215) confirms Vietnamese catfish/pangasius continues under AD. Mexican tilapia and Ecuadorian corvina remain primary substitutes. The NOES sunset also covers China, Korea, Taiwan, Japan, so the entire APAC electrical steel supply chain remains under U.S. trade remedy for another five years.

What Were Watching Next Week

1. April 27 to May 1, 2026, ITC tin mill preliminary conference: The ITC typically holds a staff conference 30-45 days after institution, placing the tin mill conference in this window. Why it matters: first live signal on how the Commission will weigh injury evidence. Prepare: download the ITC institution questionnaire; model 2022-2025 import volumes from China, Taiwan, Turkey against PPI series PCU3311.

2. April 30, 2026, FRED Trade Balance March 2026 release: February deficit came in at -$57.3B, worsening from January's -$54.7B. Why it matters: three consecutive months of widening deficit reinforces the political case for aggressive Section 232 and AD enforcement. Prepare: if March prints worse than -$62B, expect accelerated Commerce investigations in Q3 2026.

3. May 1-7, 2026, Chinese retaliation window on aluminum circumvention: MOFCOM typically responds to circumvention findings within 2-3 weeks. Why it matters: retaliation usually targets U.S. agriculture (soybeans, sorghum) and aerospace. Prepare: U.S. ag exporters should pre-position shipments ahead of any Chinese tariff window.

4. May 5, 2026, BLS Import Price Index April release: March printed 144.6, +0.77% m/m. Why it matters: a reading above 145.5 confirms tariff cost pass-through is accelerating, giving the Fed additional justification for higher-for-longer. Prepare: stress-test 2026 Q4 margin plans at IR = 148.

5. May 12-15, 2026, Section 232 steel derivative expansion hearing (rumored): Trade press has reported a forthcoming Commerce hearing on expanding Section 232 derivative coverage. Why it matters: an expansion would layer additional 50% tariffs on top of AD/CVD rates for covered products, including potentially all seven tin mill HS codes. Prepare: model cumulative landed-cost impact of AD + Sec 232 + MFN on your top 10 subject SKUs; engage trade counsel on a hearing request.