Vietnam's China+1 role needs a three-part test

Vietnam sits in a busy part of the board agenda. It has trade-agreement access, manufacturing momentum and a clear role in many China+1 discussions. The UK-Viet Nam Free Trade Agreement text and the UK's CPTPP participation both make the legal route more visible for UK exporters.

Legal access is only the first layer. A manufacturer still needs to know whether Vietnam solves the actual problem. A sales-market decision asks whether customers, distributors and aftersales channels are strong enough. An assembly decision asks whether labour, site, supplier and quality systems support the product. A sourcing decision asks whether the input base reduces dependency or simply moves final assembly while keeping upstream risk in place.

The difference matters financially. If Vietnam is used as a sales market, the cost is mostly commercial development, distributor management and regulatory adaptation. If it is used as an assembly node, the cost moves into quality control, supplier qualification and operating oversight. If it is used as a sourcing alternative, the board needs proof that upstream inputs, rules of origin and logistics resilience improve enough to justify the switch.

Why we used Porter's Diamond.

Porter's Diamond is a well-known competitiveness framework developed by Michael Porter to assess why countries become strong in particular industries. It looks at factor conditions, demand conditions, supporting industries, firm rivalry and the role of government.

We used it here because Vietnam's China+1 case is a country-fit question. The useful point is which part of Vietnam's operating environment supports the specific role a UK manufacturer wants it to play.

What the Diamond shows.

Finding 1: factor conditions support assembly before full substitution.

Vietnam can be attractive where labour availability, industrial zones and export manufacturing capability match the product. That supports an assembly or final-configuration role. It gives less comfort where the product depends on specialist upstream inputs that still come from China or another regional supplier base.

The practical implication is simple. Ask for a bill-of-materials dependency map before describing Vietnam as a supply-chain alternative.

Finding 2: rules of origin decide whether the trade agreement helps.

The Business.gov.uk CPTPP rules of origin guidance for Vietnam explains that preferential treatment depends on product-specific rules. If the product is assembled in Vietnam but key inputs come from elsewhere, the origin answer may depend on the exact HS code, regional value content and transformation test.

That makes origin evidence part of the investment case. A route that looks cheaper in operations can lose value if it cannot use the preference the sales forecast assumes.

Finding 3: demand conditions need customer proof.

Vietnam as a customer market should be tested through distributor strength, buying centres, aftersales expectations and conformity requirements. The commercial risk is overbuilding a country presence for a market that is operationally interesting but commercially thin for the specific product.

Finding 4: supporting industries vary by product.

The supplier base is deeper in some sectors than others. Electronics, garments and some industrial components have more developed ecosystems. Niche engineered products may still need imported inputs, imported tooling or close technical oversight from the UK.

Finding 5: government and trade architecture reduce friction only when the operating model is ready.

Trade agreements, recognition arrangements and policy support help most when product-specific certification, distributor diligence and supplier qualification are already defined.

The management application.

The board should approve a Vietnam role with evidence behind it. Put one page in front of the leadership team with three columns: sales market, assembly node and sourcing alternative. For each column, show the evidence, cost, risk and decision owner.

That forces the conversation away from general China+1 optimism and towards a practical question: which role creates measurable resilience or growth for this business?

What to do before approving Vietnam.

1. Define the role being assessed: sales, assembly, sourcing, or a phased combination.
2. List the products in scope and the HS codes that drive origin treatment.
3. Map upstream inputs by country, supplier and qualification status.
4. Test rules of origin before adding tariff preference to the business case.
5. Ask distributors or customers for evidence of demand, service expectations and buying process.
6. Build a cost-to-serve view that includes quality visits, tooling, inventory, aftersales and management time.

Red flags.

• The business case says China+1 without naming the product role.
• The margin model includes tariff preference before origin has been checked.
• The Vietnam plan depends on suppliers that have not passed technical qualification.
• Sales assumes a local distributor can solve certification and aftersales.
• The board sees one country score instead of three role-specific scores.

Torsik read.

Vietnam is strongest when the board assigns it a specific job. Treat it as a role-selection decision: sell there, assemble there, source there, or wait.

If the evidence fails to say which role Vietnam plays, the strategy is still too vague for board approval.

Boundary. This is a commercial framework. Company-specific trade, tax, customs, regulatory, legal or financial treatment needs current official guidance, product codes, supplier evidence, customer terms and specialist review.