The Trade Stack Issue #24 — Section 232 derivative copper battery grade, AD/CVD final on Vietnam plywood, Section 301 List 4A scope reconciliation

This Week in Tariffs

1) Section 232 — derivative copper expands to battery-grade products

Commerce expanded the Section 232 derivative copper list this week to cover select copper products used in lithium-ion battery and EV manufacturing (HTS 7409+ battery-related line items). This is a notable expansion into the EV supply chain, which had previously sat on the edge of the in-scope basket. Importers in the battery / EV component space should refresh their Section 232 stacking exposure analysis.

Who's affected: EV / battery component importers, particularly HTS chapter 74 and 85. Source: Commerce / Federal Register notice, July 6, 2026.

2) AD/CVD — final on Vietnam plywood

Commerce issued the final AD/CVD rates on Vietnam-origin hardwood plywood (HTS 4412). Rates were tightened from the preliminary determination, which had flagged transhipment risk on China-sourced hardwood inputs. Importers shipping hardwood plywood from Vietnam should re-baseline working-capital exposure.

Who's affected: Vietnam-origin hardwood plywood importers — HTS 4412.33 / 4412.34. Source: Commerce AD/CVD Access portal, July 2026.

3) Section 301 — List 4A scope reconciliation underway

USTR is undertaking a public scope reconciliation on List 4A — the 7.5% add-on rate applies to certain HTS lines originally moved off the higher 25% rate. The Q3 review is the rare opportunity for importers to submit scope comments. Importers shipping List 4A HTS codes should consider filing scope comments alongside their broker.

Who's affected: China-origin List 4A importers (HTS lines subject to 7.5% rate). Source: USTR, Q3 2026 List 4A scope review.

Duty Savings Spotlight

EV batteries vs. battery components — chapter 85 misclassification risk

Lithium-ion batteries (HTS 8507.60) versus individual cell assemblies (HTS 8507.10) under recent classification rulings have meaningful duty outcomes:

• HTS 8507.60.00 (lithium-ion accumulators, assembled batteries) — 3.4% MFN + Section 301 (China) if applicable + Section 232 derivative copper exposure
• HTS 8507.10.00 (lead-acid accumulators, assembled batteries) — 3.5% MFN + Section 301 (China) if applicable

How to check: Open USTradeStack HTS Classifier and describe the battery's chemistry (lithium-ion / lead-acid), cell configuration, and assembled status. Confirm Section 232 derivative scope and Section 301 list placement with your broker before entry. The USITC HTS database is the authoritative source.

Run the HTS Classifier →

Compliance Alert

USTR List 4A scope comment window

USTR's Q3 List 4A scope reconciliation is the most actionable item of the month for importers shipping List 4A HTS codes. Submitting scope comments during the review cycle is how importers either:

• Request exclusion from the 7.5% add-on rate where the importer can demonstrate that the specific HTS code was not list-eligible, or
• Request confirmation of included coverage where a reclassification could move the importer off the 7.5% rate.

Impact: All China-origin List 4A importers on the 7.5% add-on rate (a wide cross-section of consumer goods, electronics, and industrial goods). Source: USTR List 4A scope comment window, July 2026.

Quick check: USTradeStack's Compliance Audit Report maps your HTS codes against active Section 301 List 4A coverage and active Section 301 exclusions to highlight motion candidates.

Run the Compliance Audit →

One Tool, One Win — Landed Cost Calculator

EV / battery and List 4A-running hotter than commodity calculators tend to budget for. Before you quote a supplier price to your team, run it through this — catches Section 232 derivative copper, Section 301 List 4A, and AD/CVD that flat percentages miss.

1. FOB purchase price + freight + insurance
2. Duty rate by HTS chapter (USITC) + Section 232 / Section 301 stacking
3. MPF + HMF + any active AD/CVD order
4. Total landed cost per unit

Run the Landed Cost Calculator →