How to Verify Genuine Vietnamese-Origin Products: A Buyer’s Guide to Avoiding China-Washing in 2026

Date: June 29, 2026 | Category: B2B Sourcing Knowledge

In 2026, “China-washing” — the practice of routing Chinese-manufactured goods through Vietnam to claim Vietnamese origin and avoid tariffs — is one of the most significant risks facing international B2B buyers. US Customs and Border Protection (CBP) has significantly increased enforcement, and several high-profile cases have resulted in seizures, penalties, and reputational damage for importers who unknowingly purchased non-compliant goods. This guide gives you a practical framework to verify that what you are buying is genuinely Vietnamese.

Why This Matters More Than Ever

The tariff differential between Chinese-origin and Vietnamese-origin goods creates a powerful economic incentive for fraud. Chinese goods entering the US now face tariffs of 100% or more on many categories. Vietnamese goods under the US-Vietnam trade framework are taxed at 20%. The difference — 80+ percentage points — is large enough that some actors find it profitable to set up minimal Vietnamese “assembly” operations that do little more than repackage or perform superficial finishing on Chinese-manufactured components.

The same dynamic applies, to varying degrees, in the EU, UK, Australia, and other markets with trade measures targeting Chinese goods. Buyers in these markets bear legal responsibility for accurate origin declarations on their import documents.

Understanding “Rules of Origin” — The Legal Standard

Origin is not simply about where a product was last touched or packed. Under most trade agreements and customs rules, a product is considered to originate from a country if it has undergone substantial transformation there. The specific test varies by product and trade agreement:

• Tariff Shift: The product changes HS tariff classification due to Vietnamese processing (e.g., raw wood imported, furniture manufactured in Vietnam — the tariff code changes → Vietnamese origin).
• Value-Added Threshold: A minimum percentage of the product’s value must be added in Vietnam. Under USMCA-style rules, this is typically 35–45%. Under RCEP, it varies by product but is often 40% regional value content.
• Specific Process Rules: Certain operations (e.g., spinning yarn from fibre, assembling electronic components) qualify; others (repackaging, cutting, diluting) explicitly do not.

Red Flags That Should Trigger Due Diligence

• A supplier who was not exporting a particular product category 12–18 months ago but now claims expertise and large capacity
• Factory tours where most machinery, packaging, and component materials are visibly Chinese-branded
• Pricing significantly below the market rate for equivalent Vietnamese-made goods
• Inability or reluctance to provide a Certificate of Origin with the specific manufacturing facility listed
• Certificates of Origin issued rapidly without corresponding production documentation
• Subcontracting arrangements where the actual production location is unclear

Verification Steps: What to Do Before You Order

• Request a Certificate of Origin (Form B or EUR.1): Issued by the Vietnam Chamber of Commerce and Industry (VCCI) or equivalent authority. The certificate includes the manufacturer’s name and address — verify this matches the factory you are purchasing from.
• Commission a factory audit: Third-party auditors (SGS, Bureau Veritas, Intertek, QIMA) can assess whether genuine manufacturing processes are occurring at the facility. Request a production process audit specifically, not just a social compliance audit.
• Request production records: Bills of materials showing Vietnamese-sourced or regionally-sourced inputs, production logs, and raw material invoices. A genuine Vietnamese manufacturer can provide these; a transshipment operator cannot.
• Check the factory’s export history: Vietnam Customs data is commercially available — sourcing intelligence providers can show you whether a factory has a documented export history in the product category you are buying.
• Visit in person or use a local agent: There is no substitute for seeing where and how your product is made. If you cannot visit, engage a local sourcing agent with physical access to the factory.

Working with Genuine Vietnamese Suppliers

Genuine Vietnamese OEM manufacturers — the ones who have been producing for export for years — welcome verification. Transparency about their processes, certifications, and supply chain is a competitive advantage for them. If a supplier resists your due diligence requests, treat that resistance as informative.

At Viet Farm Vision, our partner factories have documented export histories and can provide full origin documentation. We support buyers in conducting verification and arrange third-party audits upon request. Contact us to discuss your sourcing requirements →