Does High Capacity Mean a Factory Can Make Your New Category?
A developer proposes adding a washed, garment-dyed hoodie to a range that has so far been plain jersey, and the quickest answer in the Monday trading meeting is to give it to the factory that already ships the basic T-shirts on time. That factory has capacity, paperwork and a working relationship. The harder question is how to choose a supplier for a new product category when none of those three things says whether the factory can make the new product repeatably.
Capacity answers how many pieces a site can produce. Capability answers whether it can produce this construction, in this fabric, with this finish, to your quality standard, more than once. The two are related but they are not the same measure, and a supplier can be very strong on the first and weak on the second. A plain-jersey line that runs thousands of pieces a day has no automatic knowledge of fleece relaxation, rib recovery, garment wash chemistry or shade control after dyeing.
The sections below set out a short method for a buyer who already knows the basics and needs thresholds, evidence requests and decision rules. The worked illustration compares a volume T-shirt factory with a complex-wash hoodie specialist. Both are hypothetical archetypes, not real companies.
What Category Capability Means, and What It Does Not
For this guide, category capability is the demonstrated ability to develop, sample and produce a specific product type (construction, fabric family and finish) at the required quality, with records that show it can be repeated. A new category means one where your own team has no production history, and often one where the supplier you would prefer has none either. The decision deadline is usually earlier than buyers expect: the supplier must be chosen before fabric is booked and before the first sample round, because switching after a failed bulk wash is far more costly than switching after a failed first sample. Our guide to the cost of changing suppliers sets out why.
Capacity, capability and related terms
| Term | The question it answers | Evidence to request |
|---|---|---|
| Capacity | How many pieces can the site make per day or week at each stage? | Line counts, machine counts, output per line for this category, current utilisation |
| Category capability | Has the site made this product type to a comparable standard? | Comparable past products, tech packs, bulk QC reports, approved samples |
| Process control | Are results consistent from lot to lot and sample to bulk? | Inline inspection points, measurement records, lot traceability, shade control records |
| Technical support | Who develops patterns and solves construction problems? | Pattern makers, sample sewers, technical contact, turnaround of comments |
| Subcontract dependency | Which critical steps happen at another site? | Named sites, ownership, audit scope, transport time, capacity commitment |
Definitions used in this guide. Retailers and factories sometimes use these words differently, so agree the meaning in writing.
Notice that only the first row is about volume. The other four describe whether the output is good, repeatable and owned by someone who can fix it. A shortlist built from capacity alone is a weak way to choose a supplier for a new product category, and it will often exclude the best specialist and include the cheapest generalist.
How to Choose a Supplier for a New Product Category: Five Steps
The method below keeps the decision in a fixed order so that evidence is gathered before commercial negotiation begins. Each step has a clear output, which makes it easy to compare suppliers on the same footing and to explain the choice to colleagues who were not on the visit.
Five steps from shortlist to decision
- 1Define the categoryWrite the construction, fabric family, finish and decoration of the new product, plus the quantities you expect in test and in scale.
- 2Request category evidenceAsk for comparable products, bulk QC records and sample approval history before any visit.
- 3Audit the floor and sample roomFollow one comparable style through every process and meet the technical staff.
- 4Run a category sample trialDevelop one real style and record first-time-right performance, comments and turnaround.
- 5Decide and set gatesChoose a supplier, set pass or hold criteria for pilot bulk and agree the corrective action route.
A generic path. The depth of each step depends on the category, the programme value and your existing relationship with the supplier.
The next four sections take the audit steps in turn. They map to the four things that most often separate a supplier who looks right on paper from one who delivers: the actual product record, the sample room, the capacity profile and the subcontract chain.
Step 1: Audit Actual Products and Process Control
Start with what the factory has made, not what it says it can make; that is the first rule when you choose a supplier for a new product category. Ask for three current or recent products that are closest to your new category, with the tech pack, the approved sample and a bulk QC report for each. A supplier that makes plain tees can show you excellent evidence for plain tees, but that evidence is not transferable to a brushed fleece hoodie with a washed finish, so be strict about what counts as comparable.
Follow one style through the floor
On the visit, choose one comparable style and follow it from fabric inspection to packing. Look at how fabric is received and relaxed, how the lay and cut are controlled, how the sewing sections are set up for the specific construction, and where measurement and inspection happen. Process control is visible in small things: whether measuring tables are in use, whether defects are recorded at the line and acted on, and whether lot and shade records exist for the previous bulk. The sequence is described in our guide to the garment production process.
What to see on the floor, and what it proves
| Check | What it proves | Warning sign |
|---|---|---|
| Comparable past products with bulk QC reports | The site has met a quality standard on a similar construction | Only samples shown; no bulk records; products are visibly simpler than yours |
| Fabric receiving and relaxation practice | The team understands knit fabric behaviour before cutting | Fabric cut straight from the roll with no rest time or inspection record |
| Line setup for your construction | Right machines, attachments and operator skills are in place | The new style would be sewn on borrowed machines or an untrained section |
| Inline and end-line inspection | Defects are found early and recorded | Inspection happens only at final packing; no defect log |
| Lot and shade traceability | Results can be traced back and controlled | No lot numbers on cut parts; shade judged by eye with no reference |
| Measurement discipline | Garment dimensions are checked against the spec | Tape measures only; no recorded measurement sheets |
A generic audit grid for knit and woven categories. Add rows for the specific processes your product needs.
If a supplier cannot show comparable bulk evidence, treat the programme as development rather than production, and plan the extra sampling, testing and lead time accordingly. Our AQL inspection guide explains how to set the inspection standard you will hold them to.
Step 2: Check the Sample Room and Technical Staff
The sample room is where a new category is either understood or guessed at. It is usually the best predictor of how many rounds the development will take, because every sample failure that comes from a pattern, construction or fabric misunderstanding costs a full round. Ask to meet the people who will work on your style, not only the sales contact.
Questions that separate a sample room from a showroom
Find out how many pattern makers and sample sewers are dedicated to the category, whether sample sewers are the same people or the same standard as bulk sewers, and who owns your technical comments from first to last round. Ask how comments are logged and returned. A strong team works from the tech pack, queries gaps early and returns annotated measurements with each sample. A weak one sews what it thinks you meant and waits for corrections. Our guide to improving sample approval rate covers how to write the specification so that misreading is harder.
Sample room and technical staff checks
| Area | What to ask or observe | Why it matters |
|---|---|---|
| Pattern making | Who cuts patterns for this category; how is block fit managed? | Wrong blocks create fit rounds that no amount of sewing skill fixes |
| Sample sewing | Is the sample team skilled on your construction, or generalist? | Poor sample execution hides whether the design is sound |
| Equipment | Are the specialist machines and attachments for the category on site? | Missing equipment forces substitutes that change the product |
| Technical contact | Is there one named person who owns comments end to end? | Fragmented comment handling is a common cause of repeated rounds |
| Turnaround | How long from tech pack receipt to sample dispatch? | Sets your realistic development calendar |
| Test access | Which tests are done in house and which at an external lab? | Determines how soon shrinkage, pilling and colour issues surface |
Observations from a visit or video call; ask to see the rooms, not just the answers.
Track one number from the first trial style: first-time-right, meaning samples approved without rework divided by samples submitted. Where definitions vary, agree whether a round with minor comments counts as approved. A supplier with no history in your category should not be expected to match an established one on the first style, but the trend across the first three or four samples tells you a good deal about how quickly it learns.
Step 3: Assess Small-Run and Scale Capacity Separately
Small-run capacity and scale capacity are different questions and a supplier can be strong on one and weak on the other. A volume factory may be built to run long orders with few changeovers and may queue a small test order behind them. A specialist may handle small lots well but run short of wash or finishing capacity when a winner needs ten times the volume. Check each separately, and for each stage of the route, because the slowest stage sets the real output.
Small-run capacity: can the site start small without being deprioritised?
Ask for the minimum order per style and per colour, the fabric minimum behind it, the wash lot minimum if there is one, and how small orders are scheduled relative to large ones. Our guide to what MOQ means in clothing manufacturing separates these minimums, which are frequently confused. Ask how many changeovers per week the site accepts, and whether a small order has a fixed place in the schedule or fills gaps.
Scale capacity: can it deliver the winner at volume?
For scale, collect the daily output of each stage for this category, not the site total. The formula is simple: daily stage output equals pieces per line per day multiplied by lines allocated, and days needed equals order quantity divided by that daily output. The programme runs at the speed of the slowest stage, which is often the wash or finishing step rather than sewing. The chart below uses hypothetical figures for a 12,000-piece repeat.
Illustrative days needed per stage for a 12,000-piece repeat
Working days, hypothetical specialist
Illustrative only. Assumed daily output: cutting 1,500; sewing 4 lines x 250 = 1,000; wash 600; finishing 1,200 pieces. Days = 12,000 divided by daily output. Not benchmark data.
Sewing looks comfortable at 12 days, yet the wash unit needs 20 working days, so wash is the real constraint. If the wash unit could allocate only half its output to your programme (300 pieces a day), the same 12,000 pieces would need 40 days. For a 2,000-piece pilot of four colours at 500 pieces each, the same assumed rates give about 1.3 days of cutting, 2 of sewing and 3.3 of wash, so a pilot hides the bottleneck entirely. That is why scale capacity should be asked about, written down and ring-fenced before the winner is known, using the thinking in our test and scale guide.
Step 4: Validate Subcontracted Wash and Decoration Processes
For garments that are washed, garment-dyed, printed or embroidered, the most important step in the route is frequently not done by the factory you are auditing. Subcontracting is not a problem in itself, but it moves the biggest quality and compliance risk to a site you may never visit. Ask early which processes are subcontracted, to whom, and where that site is relative to the main factory.
Treat the subcontracted unit as part of the supplier. Request its audit scope and compliance status, and check that the audit your supplier shows you actually covers that site. For chemistry, ask whether the wash unit works to a recognised chemical management programme such as ZDHC, and check the current version of whatever programme your own policy requires. Our guide to pigment and acid washed hoodies explains why recipe control and pilot bulk approval are the heart of this stage, and our fabric dyeing methods guide sets out how dyeing routes differ.
Subcontracted wash and decoration validation
- Name, address and ownership of the wash, dye, print or embroidery site, and whether it is inside the audit scope.
- Documented wash or dye recipe for the approved sample, with a record for each bulk lot.
- Pilot wash approved against a shade band and a golden sample before bulk goes in.
- Shrinkage, colourfastness and strength tested after the finishing process, not only on the greige fabric.
- Capacity commitment: pieces per day the unit can give your programme, in writing.
- Transport time and handling between sites included in the lead time and the risk plan.
- Corrective action route: who decides rewash, reject or accept, and how fast.
Test methods and pass limits are set by your programme and named in standards bodies publications; confirm the current version and the method your customer requires.
A lab test, a certification and a marketing claim are three different things. A test measures a garment against a stated method, a certification is a scoped statement about a process or site, and a claim is the brand's own wording. Do not let a certificate on the factory wall substitute for a test result on the washed garment.
Worked Illustration: Volume T-Shirt Factory vs Complex-Wash Hoodie Specialist
The illustration compares two hypothetical supplier archetypes for the same new programme: a washed, garment-dyed fleece hoodie. Supplier A is a volume T-shirt factory with excellent output on plain jersey. Supplier B is a hoodie specialist with its own wash relationship. Neither is a real company, and the ratings are indicative judgements, not measured results.
Indicative capability comparison by archetype
1 dot = low, 5 dots = high
| Volume T-shirt factory | Complex-wash hoodie specialist | |
|---|---|---|
| Plain jersey throughput at volume | ●●●●● | ●●●●● |
| Fleece and rib handling | ●●●●● | ●●●●● |
| Garment wash and dye control | ●●●●● | ●●●●● |
| Sample room depth for new constructions | ●●●●● | ●●●●● |
| Small-run flexibility | ●●●●● | ●●●●● |
| Repeatability on simple, stable specs | ●●●●● | ●●●●● |
| Cost efficiency on plain basics | ●●●●● | ●●●●● |
Indicative 1-5 ratings of two hypothetical archetypes for illustration. Real suppliers vary widely and must be audited individually.
The ratings show the pattern, but a buyer needs a score that can be defended. The table below weights five criteria for this specific programme and scores each supplier from 1 to 5. Weighted points equal weight multiplied by score divided by 5, so a perfect score would be 100.
Weighted category-fit score for a washed fleece hoodie (illustrative)
| Criterion | Weight (assumed) | Supplier A score | Supplier B score | A points | B points |
|---|---|---|---|---|---|
| Comparable product evidence | 25 | 2 | 5 | 10 | 25 |
| Process control and traceability | 20 | 4 | 4 | 16 | 16 |
| Sample room and technical staff | 20 | 2 | 4 | 8 | 16 |
| Wash and decoration control | 20 | 2 | 4 | 8 | 16 |
| Small-run readiness | 15 | 1 | 3 | 3 | 9 |
| Total | 100 | 45 | 82 |
Illustrative calculation. Weights and scores are assumed for this hypothetical programme and are not benchmarks. Points = weight x score / 5.
On these assumptions Supplier B scores 82 against 45, driven by product evidence, sample room and wash control rather than by throughput. Change the programme to a plain tee in a stable specification and the weights would move toward process control and cost, and Supplier A could win comfortably. The conclusion belongs to the category, not to either factory, which is why a single ranking cannot be reused each time you choose a supplier for a new product category. Quote price is deliberately absent here; it comes after fit is established and should then be compared on a normalised basis, as in our guide to building a supplier scorecard.
KPIs to Track: First-Time-Right, Capacity, Quality and MOQ
Four measures cover most of what a buyer needs to monitor during selection and the first trial. Define each one in writing with the supplier, because the denominator is where most disagreements start.
The four KPIs and how to calculate them
| KPI | Definition and formula | How to use it for a new category |
|---|---|---|
| First-time-right | Samples approved without rework divided by samples submitted, usually per category and per round | Compare the first three or four trial samples; a rising trend shows learning, a flat one shows a gap |
| Capacity | Pieces per day at each stage for this category: pieces per line per day x lines allocated; days needed = quantity divided by the slowest stage output | Ask for stage-level figures and written allocation for pilot and scale separately |
| Quality | Defect rate = defective units divided by units inspected; also AQL result at final inspection and lab test pass or fail against your own limits | Hold pilot bulk to the standard agreed in advance; report sample quality and bulk quality separately |
| MOQ | Minimum order quantity; separate fabric, wash lot and per-style or per-colour minimums | List every minimum behind the headline number so the true entry cost is clear |
AQL means acceptable quality limit, a sampling standard. Definitions vary by retailer and supplier, so state which denominator is used.
As an illustration with assumed numbers, if 6 of 10 category samples are approved without rework, first-time-right is 60%. If a final inspection finds 6 defective units in a sample of 200, the defect rate is 3%. Neither figure is a benchmark; they show the arithmetic. For a new category the useful question is whether each number improves across rounds and whether the supplier has a credible reason why.
Decision: How to Choose a Supplier for a New Product Category in a Day
Most of this evidence can be gathered in a single structured visit, or a video call with a floor walk, provided the agenda is fixed in advance and the supplier has been asked to prepare the comparable products. The agenda below is a template to adapt to your category and the travel available.
An illustrative one-day audit agenda
- OpeningReview the category brief and the comparable products the supplier has prepared, including bulk QC reports.
- Floor walkFollow one comparable style from fabric receiving through cutting, sewing, finishing and packing.
- Sample roomMeet pattern makers and the technical contact; review a recent set of annotated comments.
- Subcontracted sitesVisit or video-tour the wash, dye or decoration unit and review recipe and lot records.
- Capacity reviewAgree stage-level daily output and written allocation for pilot and scale separately.
- Wrap-upScore the criteria together, record gaps and agree the trial sample and gate criteria.
Illustrative template. Sequence and timing depend on site size, category and what is subcontracted.
The decision rule to choose a supplier for a new product category is simple. Prefer the supplier with the strongest comparable product evidence and wash or decoration control for this category, then check that small-run and scale capacity are written down. If the best-fitting supplier is not the cheapest, the gap needs a number: price the risk of the weaker option as expected rework, delay and markdown, not as a feeling.
A supplier with strong paper credentials but weak trial samples should drop in the ranking; one with thin history but a fast-improving first-time-right trend and a ring-fenced capacity commitment can move up. Monitor first-time-right on the trial style and defect rate on pilot bulk, and use the gates in our guide to testing a new hoodie supplier before you commit larger volume.
Before you choose a supplier for a new product category, ask yourself one question: if the wash unit or the sample room behind your preferred supplier failed on the first bulk lot, could you name the person, the record and the written capacity commitment that would show it early?
How Ruhrose Approaches a New Product Category
Ruhrose develops and produces hoodies, jersey, denim and woven casualwear in Bangladesh with UK buyer support, and we say plainly when a product sits outside that core. Technical sportswear, flat-knit knitwear and certified workwear or PPE are not what we do, and a buyer needing them should audit a specialist using the same method as above. For categories inside our range, we sample before bulk, tell you what we make ourselves and what is processed by partners, and expect you to audit us as you would any supplier. Our test and scale approach is a risk-reduction model, not a risk-free one, and a proposed test quantity such as 500 pieces per style and colour depends on fabric, dye, trims and factory.