Sourcing
Second Sourcing: Adding a Backup Supplier Without Losing Your Spec
A second source is a backup factory qualified to make a product you already sell, to the same specification and tolerances as your current supplier. You add one without losing your spec by making the spec portable first: owned by you, written down in full, and judged against a sealed reference sample rather than against habits that live inside the first factory. Finding the second factory is the easy part; the work is almost all in the specification.
This guide is for a brand that intends to keep its current supplier and wants a qualified backup behind it. Replacing a supplier outright is a different exercise, not covered here.
Why brands add a second source
The triggers are practical: a growing range that needs more peak capacity than one production plan can give, the risk of a disruption taking your only supplier offline in the weeks you cannot afford, and the quiet pricing power a supplier holds as your only option.
A second source answers all three, but it is not free. You pay twice for sampling and approvals, hold two sets of minimums, and must keep two factories aligned on one product. On a small range that overhead can cost more than the risk it covers, and deepening one good relationship is often the better spend.
First, check you actually own your spec
The most common discovery when a brand tries to second source is that its specification does not exist anywhere it controls: the product is real, but the knowledge of how it is made sits inside the first factory. That is a dependency, not a spec. Before approaching anyone, assemble what you own:
- A written tech pack per product: fibre, construction, finished dimensions, tolerances, make-up, labelling and packing. If you have never written one, do it now, while the first supplier can still answer questions; the tech pack guide covers the structure.
- A physical sealed sample of each product as shipped, signed and dated, kept by you. This is the reference both factories are judged against.
- Your colour standards: approved lab dips or swatches you hold, not shade names in an email thread.
- Clarity on who owns any artwork, weave design or embroidery file. A design you paid to develop should be stated as yours in writing; one developed at the supplier's cost may not travel.
If any are missing, closing the gap is the real first step, and it is far easier while the relationship with your current supplier is healthy.
Making the spec portable
A portable spec describes the result, not the first factory's way of reaching it. The second factory has different looms and different finishing habits, so anything written as "do what Factory A does" will drift. Write targets and tolerances instead.
| Element | Portable form | Non-portable form |
|---|---|---|
| Cloth | Fibre, construction, agreed weight or count, with tolerance | "Same quality as current" |
| Colour | Physical approved standard plus Pantone TCX reference | A shade name or a photo |
| Size | Finished dimensions after wash, with tolerance | Cutting dimensions from one factory's shrinkage |
| Make-up | Hem depths, closure type, stitch details, drawn or photographed | "Standard finish" |
| Packing | Fold, polybag, insert, carton markings, specified | "Pack as usual" |
Two details deserve special care. State sizes as finished, after-wash dimensions with a tolerance, because two cloths shrink differently and each factory must cut its own allowance to land on your number. And treat colour as a physical standard: the same Pantone TCX reference interpreted twice produces two different first lab dips, which is what the approval round exists to catch. Run the process in the colour matching guide from one sealed standard for both suppliers.
Qualifying the backup
Qualification is a compressed version of your original development, run against the sealed sample instead of an idea.
- Share the spec, not the source. Send the tech pack and reference sample. There is no need to name your current supplier.
- Counter sample. From an agreed specification, expect a counter sample in roughly a week on woven goods and around ten days on knitted. Judge it against the sealed sample side by side, washed once if the customer will wash it.
- Lab dips and strike-offs. Approve colour and any print on the second factory's own cloth, never on the first factory's swatches.
- A small trial run. A qualification order should not have to be a container. From 50 pieces, set per quality and per colourway, a trial can cover a size curve without committing real volume. Inspect it as strictly as a first order, because it is one.
- Agree the clock. Bulk from 60 days FOB after sample approval is a workable frame; confirm the second factory's own figure, and hold both suppliers to one incoterm so quotes stay comparable.
A factory that controls its stages in its own facility is easier to qualify as a second source, because the variables sit with one team rather than a chain of subcontractors. H & J Exim, a home textile manufacturer in Gurugram, India, runs 100% in house from yarn to carton, matches colour to Pantone TCX with lab dips and strike-offs, and ships FOB Nhava Sheva to the USA, Canada, UK, Europe, UAE, Saudi Arabia, Australia and New Zealand; the private label programme sets out the sampling and minimum terms a qualification run would use. The bed linen and table linen ranges show the products such a run can cover.
Keeping two factories on one product
Qualification gets you a matching product once. Keeping it matching is a routine:
- Version the spec. One master document, dated, held by you, issued identically to both factories. Any change goes to both on the same day.
- Renew the standards. Sealed samples age and fade. Replace them on an agreed cycle from an approved production piece, and send both factories cuttings from the same piece.
- Order from both. A backup that has not produced for a year is a theory, not a backup. Keep most volume with the primary and a steady minority with the second source, so its approvals stay current and a switch under pressure is a volume change rather than a restart.
- Inspect to one standard. Same tolerances, same AQL, same inspector's brief for both. The moment one factory is graded more gently, you have two products.
Where it goes wrong
Concede the limits honestly. Two factories never make literally identical goods; the aim is two products inside one tolerance band, indistinguishable to your customer. Handle and finish are the hardest to match and the easiest to let drift, so judge them on the washed product, not the showroom sample. And a complex jacquard or a speciality finish may carry setup costs that make a second source uneconomic; for those items it can be more rational to hold safety stock and second source only the core of the range.
If you are mapping a product onto a second programme, send the tech pack and a reference sample through the contact page; expect a response within one to two business days.
Common questions
Should I tell my current supplier I am adding a second source?
There is no obligation, but honesty usually costs less than discovery. Framed as capacity protection, most established suppliers accept it as normal practice. What you should never do is hand one supplier's development work to another without owning the rights to it.
How much volume should the second source get?
Enough to stay qualified and commercially interested: regular orders rather than a one-off trial, while the primary keeps the majority. The split matters less than the principle that the backup produces routinely and its approvals stay current.
Will the two factories' products ever match exactly?
No, and a spec that demands it will fail both of them. Different looms and finishing lines produce small differences in handle and shade at the same nominal quality. The achievable standard is both inside the same written tolerances, with a customer unable to tell them apart.
How long does qualifying a second source take?
Counter samples run about a week on woven and about ten days on knitted, colour approvals add their own rounds, and a trial order follows at bulk lead time, from 60 days FOB after sample approval. A realistic frame end to end is a season: qualify before you need the capacity, not during the emergency.