# Local supplier development around internationally mobile production

## A production location and a production network are different achievements

Attracting an internationally mobile factory creates an opportunity for domestic suppliers, but the relationship is not automatic. An assembler can expand exports while continuing to import most components. A local distributor can increase sales without undertaking additional manufacturing. A domestic producer can become a qualified supplier yet receive only a small initial order. Each is a different stage of network development.

Indonesia, Vietnam, and Mexico provide complementary evidence. Indonesia's investment administration describes a system for facilitating partnerships between large investors and smaller enterprises. Vietnam's industry ministry reports supplier-development activities involving assessments, technical advice, and entry into multinational production chains. Mexico publishes an accounting measure of national content in global manufacturing. These sources observe different parts of the process and should not be treated as a common performance ranking.

The economic question is whether local firms acquire durable production capabilities and generate additional domestic income. That requires following actual orders, imported inputs, quality, costs, delivery, workforce development, and access to more than one customer. An announced partnership is relevant implementation evidence, but it cannot establish all of those outcomes.

## Indonesia's partnership platform addresses access

BKPM's March 13, 2025 account describes the partnership feature in Indonesia's Online Single Submission system and an associated event for smaller enterprises. It explains access to investment-related partnership opportunities and business cooperation agreements, alongside specified regulatory obligations for some large businesses. The publication is evidence of a facilitation mechanism, rather than proof that every participating enterprise secured a lasting production contract. [Ministry of Investment and Downstream Industry/BKPM, OSS partnership event](https://www.bkpm.go.id/en/info/press-release/500-msmes-participate-in-oss-event).

The mechanism can reduce an information barrier. A smaller firm may not know an investor's requirements or the route to procurement staff. An investor may lack information about local producers. A platform can make opportunities visible and standardize part of the process. It cannot ensure that a potential supplier has the equipment, certifications, working capital, or delivery performance required for the contract.

Evaluation should therefore distinguish registered firms, introductions, signed agreements, orders placed, orders delivered, and repeated commercial relationships. Counting the first stages as if they were the last would overstate results. Counting only final exports would instead miss the institutional work needed to create a credible supplier pool.

The production activity should also be identified. Catering, transport, maintenance, packaging, components, and engineering can all generate domestic value, but they have different technological and market implications. A broad partnership total cannot establish that complex component manufacturing has deepened. The distinction is necessary for evaluating a stated industrial objective, rather than for denying the value of other services.

## Vietnam's evidence distinguishes advice from supplier entry

Vietnam's industry ministry describes cooperation with Samsung on production improvement, technical and management training, quality systems, and supplier connections. Its account reports that more than four hundred Vietnamese enterprises had received assessments and consultancy by the end of 2024, and that sixty-three became Tier-1 or Tier-2 suppliers in the relevant chain. Those are reported program outcomes within a specified cumulative account; they do not establish a national supplier-conversion rate or a causal comparison with unsupported firms. [Ministry of Industry and Trade, supplier-development cooperation](https://moit.gov.vn/en/minister-s-newsletter/active-news/moit-samsung-cooperation-enhances-local-suppliers-role-in-global-value-chains.html).

The distinction between assessed and supplying firms matters. Assessment identifies potential gaps. Consultancy can change practices. Qualification permits participation subject to customer requirements. Purchase orders create revenue. Repeated orders can support investment and learning. Each stage is informative, but a firm can pass one stage without reaching the next.

Supplier tiers also need careful interpretation. A direct supplier to a lead manufacturer and a supplier to another component producer occupy different contractual positions. Tier status does not by itself reveal the domestic content of the supplied product, the sophistication of the process, or whether knowledge is retained by the firm. Those require information about inputs, design responsibilities, and actual operations.

The ministry's description of production and quality support nevertheless identifies a specific route beyond introductions. It focuses on the capabilities required to meet a buyer's operating standards. That is the relevant comparison with Indonesia's access mechanism: supplier development involves both finding opportunities and becoming capable of fulfilling them.

## Mexico's national-content account answers another question

INEGI's December 5, 2025 results for 2024 describe the export value added of global manufacturing, or VAEMG. The publication defines the measure through global manufacturing production less imported intermediate inputs, equivalently combining the covered manufacturing value added with intermediate consumption of national origin. It reports VAEMG at 44.2 percent of global manufacturing production in that publication's preliminary current-price results. That percentage is not the share of exporters owned by Mexican nationals or the share of suppliers newly created by an investment program. [INEGI, VAEMG 2024, methodology and results](https://www.inegi.org.mx/contenidos/saladeprensa/boletines/2025/pibval/VAEMG2024_RR.pdf).

The production boundary is therefore essential. National-content accounting can describe the domestic linkage within the specified framework. It does not identify which supplier entered, why the buyer selected it, or how much of its business is additional. Nor should its categories be silently equated with a fully traced international input-output allocation through every upstream production stage.

This is why the three country sources are complementary. Partnership administration observes a commercial access process. Supplier-development records observe qualification and reported participation. National accounts observe a defined production and input relationship. A convincing assessment connects those levels rather than substituting whichever has the largest available number.

## Exhibit: local invoicing is not the same as local production

Consider a hypothetical assembler exporting products worth one hundred currency units. Initially it buys imported components directly for sixty, purchases locally produced inputs for fifteen, and generates twenty-five of its own value added. Assume the local input producer uses imported inputs worth five and creates value added of ten. There are no other production stages, taxes, or inventory changes.

| Configuration | Direct imported purchases by assembler | Purchases invoiced by resident suppliers | Assembler value added | Consolidated domestic value added |
|---|---:|---:|---:|---:|
| Initial production chain | 60 | 15 | 25 | 35 |
| Imported components routed through local distributor | 40 | 35 | 25 | 35 |
| Genuine local substitution with imported inputs | 40 | 35 | 25 | 49 |

In the second row, twenty of the original imported components are simply purchased through a resident distributor at the same value. Assume, solely to isolate routing, that the distributor adds no margin or other production. The assembler's directly imported purchases fall, and its resident-supplier invoices rise. Consolidated domestic value added remains thirty-five because the distributor still imports the same twenty. A real distributor's margin would add its own production, but not convert the entire imported invoice into domestic value added.

In the third row, a domestic producer genuinely replaces those twenty of components. It imports six in inputs and creates fourteen of value added. Together with the existing local producer's ten and the assembler's twenty-five, domestic value added becomes forty-nine. The increase is fourteen, rather than the full twenty of procurement redirected to a resident supplier.

This is a deliberately small accounting example, not an estimate for Indonesia, Vietnam, or Mexico. It demonstrates the evidence needed to interpret a local-purchasing target. Supplier residence identifies where the immediate invoice is issued. Production records identify what is actually made there. Imported-input information establishes how much of the invoice contributes to domestic production within the stated chain.

## Capability gains can precede large procurement shares

A new supplier may begin with a narrow product and small volumes while learning customer procedures. Its initial expenditure share can be modest even when it develops a difficult capability. Qualification, defect rates, delivery reliability, and successful production of more demanding specifications can reveal progress before aggregate purchasing ratios move substantially.

Conversely, a rising local-purchasing share can occur through a change in product mix rather than an improvement within suppliers. An assembler expanding a product that already uses more local packaging will raise the aggregate share. A supplier-development assessment should distinguish that composition effect from changes in the domestic content of a matched product.

Prices also affect procurement shares. If local inputs become more expensive relative to imported components, the local value share can rise without an increase in physical sourcing. That movement may reflect quality upgrading, input-cost pressure, or reduced competition. Quantities and specifications are needed to determine which interpretation applies.

Ownership is another separate dimension. A locally resident supplier owned abroad can employ domestic workers and create domestic value added. A domestically owned trading firm can import most of what it sells. Industrial objectives may care about ownership, technology control, or retained income, but those questions should be measured explicitly rather than inferred from residence alone.

A useful supplier-development outcome is the ability to meet a tighter specification at a competitive cost, rather than simply to receive a protected order. That distinction matters when assistance ends or the original investor changes its product range. Evidence of lower defects, more predictable lead times, and successful independent bids can indicate capabilities that survive beyond the initial relationship. The associated income should still be measured net of imported inputs and the resources used in production. A technically improved supplier can create a durable option for future buyers even before it reaches large scale, but that option should be described as potential capacity until actual orders and delivery establish its commercial use.

## Working capital and buyer concentration affect durability

Winning an order can require investment before payment arrives. Tooling, certification, materials, and wages may need to be financed during a trial period. A smaller supplier can meet technical requirements and still be unable to fund a larger contract. Payment terms and access to working capital can therefore determine whether an introduction becomes sustained production.

The buyer's commitment matters as well. Specialized equipment may have little value outside one product or customer. A supplier that invests on the basis of a short or uncertain order faces a different risk from one with a credible multi-year demand path. Contract design can influence both the willingness to invest and the distribution of gains from learning.

A supplier with one major customer can grow rapidly while remaining commercially vulnerable. Evidence of repeat orders is useful, but additional customers can indicate that acquired capabilities are transferable. The evaluation should examine whether improvements support a broader market or depend entirely on a temporary procurement relationship.

Buyer diversification is not costless. Different quality systems and product requirements can require additional engineering and certification. The relevant outcome is commercially sustainable diversification, rather than a target for customer counts disconnected from profitability. A firm can serve many customers poorly or a smaller number with valuable capabilities.

## What a comparative evaluation should follow

A credible study would identify supplier cohorts before support, record the services provided, and follow qualification, sales, survival, employment, investment, and imported inputs. It would compare supported firms with an appropriate counterfactual while accounting for selection: buyers and agencies often choose firms that already have stronger prospects. A simple comparison with all other small firms would therefore be misleading.

The costs of assistance and compliance belong in the evaluation. Testing support, consultancy, and procurement coordination use resources. Their benefits can include learning and access that persist beyond an initial contract, but those effects require evidence. Counting every subsequent sale as an attributable program benefit would ignore the sales that might have occurred anyway.

The Indonesia–Vietnam–Mexico comparison therefore supports a connected evidence chain. Access mechanisms can open a commercial door; technical assistance can help firms meet requirements; actual production and accounting data can establish the domestic activity generated. The depth of a local network is demonstrated when qualified firms deliver competitive products, retain capabilities, and create income across repeated commercial relationships.

See [production through changes in trade geography](/research/tracing-production-through-changes-in-trade-geography/) for international production accounting, and [announcements to operating capacity](/research/from-investment-announcements-to-operating-capacity/) for the distinction between investment commitments and delivered production.

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American Economic Senate