In August 2023, the U.S. Department of Commerce (DOC) issued its final determination: solar cells and modules from Vietnam (with Cambodia, Malaysia and Thailand) were circumventing antidumping and countervailing duties (AD/CVD) on Chinese solar cells — including Vina Solar, the LONGi-owned Chinese-capital enterprise in Vietnam. This is the costliest precedent on component origin every Chinese investor should memorise before siting a plant in Vietnam.
1. The Vina Solar case: what happened
- Origin: a U.S. solar manufacturer (Auxin Solar) complained that Chinese producers were dodging duties via minor processing in Southeast Asia before shipping to the U.S.;
- Investigation: DOC investigated from March 2022 — whether operations in the four Southeast Asian countries were mere “minor processing” to evade China AD/CVD duties;
- Preliminary (Dec 2022) and final (Aug 2023) findings: five companies found circumventing — including Vina Solar (Vietnam), with BYD Hong Kong, New East Solar (Cambodia), Canadian Solar and Trina Solar (Thailand);
- Consequence: Vina Solar was excluded from the certification process for exemptions — its cell/module shipments faced AD/CVD duties;
- DOC also issued a country-wide circumvention finding — affecting all Vietnamese solar exports to the U.S.
2. What “circumvention” means
- Not tax evasion (not paying due taxes) — but sidestepping trade-remedy duties by shifting a small slice of production to a third country;
- DOC examines: whether third-country value added is “minor”; whether key components come from the dutied country; whether trade patterns shifted after duties were imposed;
- If circumvention is found: third-country goods face the same AD/CVD rates as the origin country’s goods;
- This is the importing country’s tool (U.S., EU…) — Vietnam-based investors must learn the export market’s rules, not just Vietnam’s.
3. Lesson 1: Component origin decides fate
- The core issue: wafers and cells made in China, merely assembled into modules in Vietnam — Vietnamese value-added too small;
- Rule: to claim Vietnamese origin (escaping China’s AD/CVD), there must be substantial transformation in Vietnam;
- Lesson for Chinese investors: if the plan is merely to “wash” origin through minor Vietnamese processing — don’t; DOC proved it detects this;
- Right approach: invest in a genuine value chain in Vietnam (from wafers/cells, or at least high-value-added steps).
4. Lesson 2: “Minor processing” doesn’t fool investigators
- DOC uses detailed questionnaires: Chinese-component value ratios, Vietnamese production steps, labour costs, fixed-asset investment;
- Non-cooperation = losing: silent companies face “adverse inference” — deemed circumventing;
- Vina Solar’s certification exclusion partly reflected incomplete cooperation at later stages;
- Lesson: if investigated — cooperate fully, hire international trade counsel from day one.
5. Lesson 3: Industry-wide contagion (country-wide)
- Country-wide circumvention findings — not just the five named companies; all Vietnamese solar exports to the U.S. affected;
- Compliant businesses suffer collateral damage — forced to prove non-circumvention via certification;
- Lesson: pick export markets with low trade-remedy risk; or prepare origin documentation in advance;
- Industry associations: join them for a collective voice when investigated — going alone is weak.
6. Lesson 4: Beyond the U.S. — the EU and others
- The EU has similar anti-circumvention tools — EU-bound exports need the same calculus;
- General trend: major importing countries increasingly tighten origin rules and anti-circumvention;
- Strategy: diversify export markets — don’t depend on one high-trade-remedy-risk market;
- Watch early warnings from Vietnam’s Ministry of Industry and Trade on trade-remedy cases.
7. Origin checklist for Chinese investors
- Value-chain design: which steps in Vietnam, what % value added — computed before investing;
- Component origins: list each key component’s origin — what % of value is Chinese;
- Documentation: keep full invoices, bills of lading, component origin certificates — for investigations (if any);
- FTA origin rules: for FTA tariff preferences — meet origin rules (RVC, HS-code transformation);
- Downside scenario: if the main export market imposes trade remedies — is the project still viable?
8. Applying beyond solar
- The Vina Solar lesson is not solar-only — every sector where China faces trade remedies (steel, aluminium, wood, electronics…) carries similar risk when shifting to Vietnam;
- Safe formula: genuine investment (large Vietnamese value-added) + diverse markets + complete origin files;
- Risky formula: minor processing + 100% Chinese components + 100% U.S.-bound exports = a Vina Solar “replica”;
- Before investing: assess trade-remedy risk as part of feasibility — not an afterthought.
9. How DOC investigations work in practice
- Petition: a domestic industry player files a circumvention allegation with detailed trade data;
- Initiation: DOC decides within weeks whether to open an inquiry – most petitions with data get opened;
- Questionnaires: exporters, importers and foreign producers receive exhaustive questionnaires – typically 30-60 days to respond, in English, with certified translations;
- Verification: DOC may conduct on-site verification visits at factories – in Vietnam, in China, anywhere in the chain;
- Determinations: preliminary (with cash-deposit requirements) then final – the whole cycle runs about a year;
- Key point: the process is public and adversarial – competitors’ lawyers will pick apart your answers.
10. The certification process for compliant firms
- After a country-wide finding, compliant exporters can seek certification that their goods are not circumventing;
- Certification requires detailed production records: bills of materials, supplier origins, production-step logs;
- Importers must also certify – the U.S. importer shares the compliance burden;
- Vina Solar’s exclusion from certification shows the price of non-cooperation – no certificate, no exemption;
- Prepare now: build certification-ready record-keeping before any investigation starts.
11. Lessons for other sectors, in detail
- Steel and aluminium: already heavily dutied globally – any Vietnam-based processing of Chinese metal needs genuine transformation analysis;
- Wood products: plywood and furniture have faced circumvention scrutiny – veneer origin matters;
- Electronics: assembly of Chinese components into finished goods for the U.S. market is the next frontier of circumvention risk;
- The pattern: wherever China faces high AD/CVD rates and Vietnam exports surge to the same market, investigators look next;
- Defence: genuine local value-added plus diversified markets is the only durable shield.
12. Early-warning sources worth monitoring
- Vietnam’s Ministry of Industry and Trade: publishes warnings on foreign trade-remedy investigations affecting Vietnamese exports;
- DOC’s public filing system: public filings reveal new petitions and inquiries as they happen;
- The EU’s Official Journal: anti-circumvention initiations are published – watch your product codes;
- Industry associations: Vietnamese and international associations circulate alerts to members;
- Your trade counsel: a retained international-trade lawyer is the fastest early-warning system money can buy.
13. Building an origin-compliance file
- Bill of materials: every component, its origin country, its value share – updated with every sourcing change;
- Production records: step-by-step logs showing what happens in Vietnam vs what arrives ready-made;
- Supplier declarations: origin certificates from component suppliers, refreshed annually;
- Cost breakdowns: Vietnamese value-added calculated and documented – your best exhibit in any inquiry;
- Retention: keep everything at least five years – investigations look backwards.
14. Talking to headquarters about origin risk
- Frame it as money: a circumvention finding can add double-digit duty rates overnight – model the margin impact for HQ;
- Show the alternative: genuine local value-added costs more upfront but buys duty-free market access – compare total landed cost, not just factory cost;
- Ask for the compliance budget: record-keeping systems, supplier audits and trade counsel are cheap insurance against a DOC inquiry;
- Headquarters that understand the Vina Solar story approve real investment; those that don’t keep chasing the cheapest assembly quote.
Contact us
FLAT Law Firm advises Chinese investors throughout the Vietnam investment cycle — from deal structuring and licensing to operations and compliance. Contact us for advice tailored to your project.
This article has been quality-reviewed by the FLAW AI Legal Council
