Choosing a manufacturer for a brand that already sells is a different exercise from finding one for a first order. You are no longer solving "who will take my order". You are solving "who can carry my volume, hold my quality, and not become a single point of failure".
Most of the criteria that matter at this stage never appear on a factory website. Across the 80 factories we document, only 25 are verified in person, and the gap between a stated capability and a confirmed one is where sourcing risk lives. This guide covers what experienced sourcing teams actually check: capacity, subcontracting, quality agreements, payment terms and exit. It also covers how to structure the relationship so a bad season does not become an existential one. If you are still at the first-order stage, start with our guide to choosing a manufacturer for clothing.
Heads up: We're Portugal Clothing Factory, a group of 80 documented Portuguese clothing factories, 25 verified in person. Minimum, lead time and payment observations below come from factory quoting and production our team has handled between 2024 and 2026. Where we cite industry sources, we name them inline.
Key Takeaways
- Capacity is a scheduling question, not a size question. Ask when, not whether.
- Undisclosed subcontracting is the most common source of unexplained quality variation.
- Written quality agreements with defined AQL levels prevent most disputes before they start.
- Single-factory dependency is the most expensive risk brands routinely accept without pricing it.
What Should a Brand Check Before Committing Volume?
Five things, in this order, because each one can end the conversation.
Capacity at your timing. Not total capacity, but capacity in the weeks you need. A factory with plenty of annual capacity may be fully booked every August. Ask which weeks are already committed for your season.
Category specialism. Factories specialise by construction: knitwear, jersey and circular knit, shirting and tailoring are largely separate skill sets with separate machinery. A factory claiming every category is usually subcontracting most of it.
Subcontracting disclosure. Ask directly which operations happen in-house and which do not. Dyeing, printing, embroidery and washing are commonly outsourced, and that is normal. Undisclosed outsourcing is not.
Financial stability. You are extending credit every time you pay a deposit before goods ship. A factory that fails mid-season takes your fabric with it.
Compliance documentation. Certificates with numbers, checkable against the issuing body's public database.
Citation Capsule Brand-level factory selection differs from first-order sourcing in prioritising capacity at specific timing over total capacity, disclosed subcontracting arrangements, and financial stability. Factories specialise by construction, such as knitwear, jersey, shirting or tailoring, so a supplier claiming universal capability is generally subcontracting part of the work.
How Do You Assess Real Production Capacity?
Ask three questions that cannot be answered with marketing language. Capacity is seasonal: 29 of the 80 factories in our group quote 8 to 10 week production windows and 26 quote 7 to 9, so a slot that exists in March frequently does not exist in June. Our lead times guide breaks the stages down.
How many machines, and of what type? A factory with 40 lockstitch machines and no coverstitch cannot make your activewear regardless of headcount.
What is your current utilisation, by month? Honest factories answer this. It also tells you where your order will sit in the queue.
What was your largest single order last year, and for what product? This separates stated capacity from demonstrated capacity.
European factories carry heavy load ahead of autumn/winter deliveries, and many Portuguese factories close for part of August. Book the weeks you need rather than assuming they will be free.
Find your factory: Need capacity confirmed for a specific season and volume? Get in contact, tell us the timing, and we'll place and manage your production with a factory in our group that has the slot.
What Should Be in a Quality Agreement?
A written quality agreement is the cheapest insurance in apparel sourcing, and most brands operate without one until their first serious dispute. Inspection follows the ISO 2859 sampling tables, with separate AQL levels for critical, major and minor defects. AQL 2.5 is the most common level for general consumer goods, 4.0 is used where minor cosmetic defects are acceptable, and critical defects are commonly set at zero (QIMA).
It should define:
Inspection standard and AQL level. A common commercial setting for clothing is AQL 2.5 for major defects and 4.0 for minor, with zero tolerance for critical safety or legal defects. Without a defined level, "acceptable quality" means whatever each party wants it to mean after the fact. AQL is a sampling acceptance rule, not a guarantee of zero-defect goods.
Who inspects, and when. In-line inspection during production catches problems while they are still fixable. Final inspection only tells you what went wrong. Our guide to quality control in Portuguese production covers the inspection stages.
Measurement tolerances. Per point of measure, per size. This is where most fit disputes originate.
Defect classification. What counts as critical, what counts as major, what counts as minor.
Remedy. Rework, discount, replacement or rejection, and who pays for what in each case.
Citation Capsule Apparel inspections follow the ISO 2859 sampling tables, with AQL levels set separately for critical, major and minor defects. AQL 2.5 is the most common level for general consumer goods, 4.0 applies where minor cosmetic defects are acceptable, and critical defects are commonly held at zero. AQL is a sampling acceptance rule, not a guarantee of zero-defect goods.
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What Payment Terms Are Normal?
A deposit against the balance on shipment is the standard structure. With Portuguese factories, typical splits run 30–50% deposit with the remainder before or on shipping.
Two details matter more than the percentage.
What the deposit covers. Usually fabric procurement, which is the factory's own cash exposure. A factory asking for a deposit is not being difficult. It is being asked to buy your materials.
Who holds the goods until final payment. Clarify this in writing. It becomes the only thing that matters if a dispute arises at final inspection.
Established brands with a track record can often negotiate better terms after two or three successful seasons. A first order almost never gets them, and asking for net terms upfront signals inexperience.
Citation Capsule Standard apparel manufacturing payment terms with Portuguese factories comprise a 30–50% deposit with the balance due before or on shipment. The deposit typically funds fabric procurement, which represents the factory's own cash exposure. Improved terms are generally available only after two or three completed seasons.
How Do You Avoid Single-Factory Dependency?
By treating it as a priced risk rather than an efficiency. Concentrating all volume in one factory buys better pricing, simpler communication and easier quality consistency. It also means a fire, an insolvency, a labour dispute or a capacity squeeze takes your entire season with it.
The standard mitigation is to keep a second qualified factory warm, running at least one style or one season's portion of volume through it. It costs a little in unit price and in management time. It is materially cheaper than an unplanned migration in the middle of a season.
Look one tier down as well. Several finished-goods factories often buy from the same upstream mill, so mapping the fabric mills, dye houses and print partners behind your factories matters as much as the factory count (Jace Apparel, 2026).
A second reason to diversify: it is very difficult to know whether your pricing is competitive when you have only one supplier.
What Should Be Agreed Before the First Bulk Order?
Six documents, and none of them is optional at brand scale. The median minimum across our documented group is 175 units per style (our MOQ guide explains how minimums are set), so a first bulk order is a real cash commitment before a single unit sells.
- A technical specification per style.
- A signed pre-production sample.
- A written quality agreement with AQL levels.
- Payment terms in writing.
- Confirmed lead times with a defined remedy for late delivery.
- A clear statement of who owns the patterns.
That last one catches brands out repeatedly. If the factory developed your pattern, ownership may not be yours by default. Agree it in writing before development starts, not when you want to move production.
Need a tech pack? Get a factory-ready single-style tech pack for €79: the specification a quality agreement references. See what's included.
How Do You Run a Factory Relationship Day to Day?
Four practices separate relationships that survive a bad season from those that do not.
One named contact on each side. Orders sent through whoever answers first produce contradictory instructions and no accountability.
Written change control. Every specification change confirmed in writing, with a date. Verbal changes on a factory floor are the origin of most disputes about what was agreed.
Scheduled check-ins, not crisis calls. A fifteen-minute weekly call during production surfaces problems while they are still fixable. Calling only when something is wrong trains the factory to hide problems.
Pay on time. This sounds obvious and is one of the strongest determinants of where you sit in a factory's queue when capacity tightens. Factories allocate scarce capacity to reliable payers, not to the loudest customer.
What a good factory does that you should expect
Flags problems early rather than at final inspection. Proposes construction changes that reduce cost. Tells you when your specification is wrong. A supplier that only ever agrees with you is not paying attention.
Citation Capsule Durable factory relationships depend on four operational practices: a single named contact on each side, written change control with dated confirmation of every specification change, scheduled check-ins during production rather than crisis calls, and prompt payment, which shapes capacity allocation when a factory is oversubscribed.
What Happens When Something Goes Wrong?
Three scenarios, and the remedy depends entirely on what you agreed before production.
Quality failure at final inspection. With a quality agreement defining AQL levels and remedies, this resolves by procedure: rework, discount, or rejection with an agreed cost split. Without one, it resolves by whoever negotiates harder.
Late delivery. Define the remedy in advance. Common structures are a discount per week late, or the factory covering air freight to recover the date. Undefined, you have no leverage at all.
Fabric arriving out of specification. Under full package the factory buys the fabric and absorbs the problem. Under CMT you supplied it, so you do. Establish this before an order, because it is one of the most common material failures. Our CMT vs full package guide compares the two models.
The escalation nobody plans for
The factory becomes unresponsive. It happens, usually because it has overcommitted capacity or hit a cash problem.
Your protection is a second qualified factory and a copy of your patterns held by you rather than by them. Both cost a little upfront and are the difference between a delayed season and a lost one.
How Do You Scale Volume Without Breaking Quality?
Volume growth breaks relationships more often than volume decline does, because it exposes capacity limits nobody tested.
Increase in steps the factory can absorb. Doubling an order is manageable. Multiplying it by five in one season usually is not, and the failure shows up as subcontracting you were not told about.
Ask about capacity in weeks, not in totals. Book slots in advance for the busy months rather than assuming availability.
Watch for silent subcontracting. Sudden inconsistency between cartons in the same delivery is the classic signal that part of your order went elsewhere.
When to add a second factory
At the point where one factory holds more than roughly 70% of your volume. That is not a rule with data behind it; it is a risk judgement. Above that share, a single failure takes your season.
A second factory also gives you a pricing benchmark, which a single-supplier relationship cannot.
How Do You Compare Quotes From Different Factories?
Not on the headline number. Four adjustments have to happen before any two quotes are comparable.
Normalise the quote basis. CMT covers cut, make and trim with you supplying the fabric. Full package (FOB) includes fabric and delivery to the agreed point. Comparing one against the other is the most common costing error, because one price includes the fabric and the other does not.
Normalise the quantity. A price at 500 units is not the price at 175. Ask every factory to quote the same quantity.
Normalise the specification. If one factory quoted a lighter fabric or fewer operations, it is quoting a different garment.
Add the invisible lines. Development, sampling, sample freight, testing, and the cost of your own time managing the relationship.
The quote that should worry you
The cheapest one, when it arrives without questions. A factory that has genuinely read your specification asks about tolerances, trims and finishing. One that returns a number in an hour has priced an assumption, and the assumption gets corrected upward after sampling.
Ask each factory what it would change to reduce cost. The quality of that answer tells you more than the price does.
What Should You Audit Before Committing Volume?
Five things, ideally in person. Only 25 of the 80 factories we document are verified through a visit, and the gap between a stated capability and a confirmed one is where money is lost. Our guide on how to find a clothing manufacturer covers the earlier vetting steps.
Machinery. Types and counts, suited to your construction.
Current utilisation. Which weeks are already committed for your season.
In-house versus subcontracted operations. Dyeing, printing, embroidery and washing are commonly outsourced, which is fine when disclosed.
Quality process. Who inspects, at which stages, against what standard.
Certificates by number, checked against the issuing body's public database rather than accepted as logos.
If you cannot visit
Ask for a video walkthrough of the production floor during working hours, unedited. A real factory does this readily. It is not a substitute for a visit, but it eliminates the worst outcomes.
Conclusion: Building a Manufacturing Relationship That Holds
The factory relationship is an operating dependency, not a purchase. Brands that treat it as a purchase get surprised; brands that treat it as a dependency build in redundancy, documentation and checkpoints.
Verify capacity at your actual timing. Insist on subcontracting disclosure. Put quality standards in writing with defined AQL levels before the first bulk order. Agree pattern ownership at the start. And keep a second factory qualified even when the first one is working well.
None of that is expensive. All of it is cheaper than the alternative.
Talk to our team: Scaling volume or qualifying a second factory in Europe? Get in contact; every serious brief gets an answer within 24 hours.
Frequently Asked Questions About Clothing Brand Manufacturers
How do brands choose a clothing manufacturer?
Established brands assess capacity at their specific timing rather than total capacity, category specialism that fits the construction, disclosed subcontracting, financial stability and verifiable compliance documentation. Price is checked last, because a factory that fails any of the first five criteria is not comparable on price.
What is a quality agreement in apparel manufacturing?
A written document defining the inspection standard and AQL levels, who inspects and at which stages, measurement tolerances per point of measure, defect classification, and the remedy for each defect category. Without it, "acceptable quality" is undefined and disputes resolve by negotiation rather than by standard.
What are standard payment terms for clothing manufacturing?
A 30–50% deposit with the balance due before or on shipment is the usual structure with Portuguese factories. The deposit typically funds fabric procurement, which is the factory's own cash exposure. Better terms usually become available after two or three completed seasons rather than on a first order.
Who owns the pattern if the factory develops it?
Not necessarily you. Pattern ownership should be agreed in writing before development begins, since a factory that developed the pattern may treat it as its own by default. This becomes critical when moving production, and is one of the most common oversights at brand scale.
Should I use more than one clothing manufacturer?
Keeping a second factory qualified, running at least one style or a portion of volume, costs slightly more per unit but removes single-point-of-failure risk from fire, insolvency, labour disputes or capacity squeezes. It also provides a pricing benchmark that a single-supplier relationship cannot.
How do I compare quotes from different factories?
Normalise four things first: the quote basis (CMT versus full package), the quantity, the specification, and the invisible lines such as development, sampling, freight and testing. Comparing a CMT quote against a full-package quote is the most common costing error, because one includes fabric and the other does not.
Should I visit the factory before committing?
Yes, or request an unedited video walkthrough of the production floor during working hours. Only 25 of the 80 factories we document are verified in person, and the gap between stated and confirmed capability is where sourcing risk concentrates.
When should I add a second factory?
When one factory holds more than roughly 70% of your volume. That threshold is a risk judgement rather than a published rule: above that share a single failure takes your season. A second qualified supplier also gives you a pricing benchmark.
We're a group of 80 documented Portuguese clothing factories, 25 verified, based in Porto and Guimarães. Tell us your product, volume, and timeline. We'll place and manage your production with the right factory in the group, usually replying within 24 hours. Flat fees, no commissions, no upsell.
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Sources used in this article
- QIMA, AQL (Acceptable Quality Limit) explained and sampling simulator, accessed October 2026.
- Jace Apparel, Global Apparel Supply Chain: 7 Steps to Build Safety, May 2026.
- PCF quoting and production records, 2024 to 2026, for minimums, lead times and payment terms. Our own operational records, not survey data.
Not sourced. The defect-cost chart, the 70% second-factory threshold and the relationship practices in this article reflect production we have managed rather than a published dataset. Treat them as indicative, not measured.
Portugal Clothing Factory is a group of documented Portuguese clothing factories in the northern textile cluster (Porto, Guimarães, Braga, Barcelos, Famalicão). We charge flat fees, reply within 24 hours, and place and manage production with the factory in our group built for your product. See how we work or get in contact.
