A prototype that works on the bench is not yet a product that can be ordered. Between the two sits a change of process, often a change of supplier, and a list of decisions — material, revision, test method, tooling ownership — that nobody needed while there were only five parts. Taiwan has many shops that take on prototype and small-batch work, which makes it a practical place to cross that gap. The risk is crossing it without noticing that the part has changed.
💬 Building prototypes or a first small batch in Taiwan and want the supplier choice and the move to production planned from the start? We find, vet and manage the shop that fits each stage as part of sourcing from across Asia. Tell us where your product is now. How we work there: our sourcing agent service for Taiwan.
Company checks and export paperwork for Taiwan generally are in sourcing from Taiwan: a buyer’s step-by-step guide. This article is about the stage before volume.
Choose the prototype route by what the prototype has to prove
Decide first whether the prototype must prove form, function or the production process, because each points to a different method — and only the last one tells you much about the production part.
| What the prototype must prove | Methods commonly used | What it does not tell you |
|---|---|---|
| Form and fit (does it look right, does it assemble) | 3D printing, CNC from block, vacuum casting | Strength, surface finish and cost of the production process |
| Function (does it work under load, heat, use) | CNC in the production material, PCB prototype with production-grade components | How a moulded or cast part will behave, since the material structure differs |
| The production process (can it be made repeatably) | Soft or bridge tooling, pilot build on the intended line | Long-run tool wear and volume yield |
| Electronics design validation | Small PCB assembly runs with the intended BOM | Supply continuity of each component at volume |
The common mistake is to approve a machined prototype and then order an injection-moulded or die-cast production part as if it were the same thing. Moulding needs draft angles, even wall thickness and gate positions that a machined part never needed. The part has to be re-reviewed for the new process, and the drawing will often change.
A prototype shop and a production shop are not always the same supplier
Ask early whether the shop that makes your prototypes will also make the production parts, and if not, plan the hand-over — the drawing, the approved sample and the lessons learned have to move with the part.
Some suppliers handle both stages; many specialise. A shop set up for fast, varied work prices differently from one set up for repeat runs, and neither is wrong for its purpose. If the production supplier is different, it should receive:
- the final drawing and model at the approved revision;
- the approved prototype or golden sample, physically, not only photographs;
- a list of what was changed during prototyping and why;
- the test results that the approval was based on.
Without that package, the production supplier starts again and repeats the problems the prototype stage already solved.
What to freeze before moving to low-volume production
Before the first low-volume order, freeze the drawing revision, the material and finish, the BOM, the test method and the packaging, and record the approval in writing at that revision.
| Item to freeze | Why it matters at the transition |
|---|---|
| Drawing and model revision | Every later report and price refers back to it |
| Material grade and finish spec | A prototype in one grade and production in another is a different part |
| BOM with manufacturer part numbers (electronics) | Prototype components bought from stock may not be the ones available at volume |
| Firmware version | Behaviour must match what was approved |
| Test and inspection method | The pass criteria have to be the same ones the prototype passed |
| Golden sample | A physical reference both sides hold |
| Packaging and labelling | Small runs often ship in temporary packing that does not survive real freight |
For the drawing details a machine shop needs, see outsourcing precision machining to Taiwan. For how to record a sample approval so it holds up later, see sample approval stages.
💬 Not sure what to freeze before the first small batch, or whether to use bridge tooling? Send us the prototype status and the target volumes.
Low-volume production: tooling choices and how to order
For small runs, decide between machining every part, bridge (soft) tooling and full production tooling based on the expected volume and how likely the design is to change — and write down who owns any tool you pay for.
There is no single right answer, and we will not give a break-even quantity because it depends on the part, the material and the quotations you actually receive. The decision factors are these:
- Machining every part avoids tooling cost and lets the design change freely, but the unit cost stays high and some geometries cannot be machined economically.
- Bridge or soft tooling costs less than production tooling and is quicker to make, but has a shorter life and may not hold the same tolerances or finish. It suits a design that is nearly final.
- Production tooling has the highest up-front cost and makes most sense once the design is frozen.
Whichever you choose, the tool is an asset. State in the order who owns it, where it is kept, whether it may be used for anyone else, and whether it is released if you move production. Taiwan’s Copyright Act and Patent Act give commissioned work to the party that made it unless the contract allocates it — the details are in Taiwan electronics OEM and ODM.
For ordering, a blanket order with call-off releases lets you commit to a volume while taking delivery in batches. Long-lead components for electronic products may need to be bought ahead of the call-offs; agree who holds that inventory and who pays for it if the product changes.
Paperwork that applies even at prototype quantities
Small quantities do not remove export control or duty: Taiwan’s strategic high-tech commodities (SHTC) rules turn on the specification and the end use, not the number of units.
Under the Regulations Governing the Export and Import of Strategic High-tech Commodities, an item is controlled because it meets a listed specification, or because its end use or end user may be military. Value matters only in one narrow case: Article 15(2) allows the authority to waive the permit for shipments to the United States or Japan where the FOB value of the same controlled item is below NT$300,000, and only after the exporter has checked that the foreign party is not on Taiwan’s SHTC entity list. Checked against the published text of the Regulations (last amended 31 October 2023) on 17 October 2026. The permit process itself is set out in Taiwan electronics OEM and ODM.
Prototypes and samples also go through normal export and import clearance, and duty at destination still applies. Taiwan has no preferential trade agreement with Vietnam — see importing into Vietnam from Thailand, Malaysia or Taiwan.
A working sequence
Prove the right thing at each stage, hand over a complete package, freeze before ordering, and settle tooling ownership before paying for it.
- Define what each prototype round must prove and choose the method to match.
- Decide whether the prototype supplier will also produce, and if not, shortlist the production supplier early — see finding factories in ASEAN and Taiwan.
- Review the design for the production process before tooling.
- Freeze the revision, material, BOM, firmware, test method and packaging, and sign a golden sample.
- Choose machining, bridge tooling or production tooling, with ownership written down.
- Confirm the SHTC position and the landed cost before the first shipment.
- Run the first low-volume batch with a first article report, then release call-offs.
💬 Want one team to take your product from the last prototype to a repeatable small batch from Taiwan? Start the conversation here.
Frequently asked questions
1. Can the shop that made my prototypes also make the production parts?
Sometimes. Some suppliers handle both stages and many specialise. Ask early, and if production moves to another supplier, hand over the approved revision, the golden sample, the change history and the test results.
2. Is a machined prototype enough to approve a moulded or cast part?
No. It proves form and some function, but a moulded or cast part has a different material structure and needs design features a machined part does not. Review the design for the production process and test parts made by that process.
3. What should be frozen before the first low-volume order?
The drawing revision, material and finish, BOM and firmware for electronics, the test method, a signed golden sample and the packaging. Record the approval at that revision.
4. Who owns bridge tooling I pay for?
Settle it in the order. Write down ownership, storage, exclusive use and release on transfer. Paying for a tool and being able to collect it are not the same thing unless the paperwork says so, and Taiwan’s statutory defaults for commissioned design work do not automatically favour the party that paid.
5. Do prototype shipments from Taiwan need an export permit?
Only if the item meets an SHTC control specification or the end use or end user raises a military concern. Quantity does not change that; a value-based waiver exists only for the United States and Japan under Article 15(2).
Sources: Laws and Regulations Database of the Republic of China (Taiwan), Regulations Governing the Export and Import of Strategic High-tech Commodities (Article 15; last amended 31 October 2023), Copyright Act and Patent Act; International Trade Administration, Ministry of Economic Affairs, SHTC guidance on trade.gov.tw. Checked on 17 October 2026.