# Suppliers, mills and factories: the leverage hidden upstream
A single silk mill in Como, northern Italy, can tell a fashion house "no." Not because it is large (most are family businesses with under 100 employees), but because it holds something the brand cannot easily replicate: decades of jacquard weaving know-how, dye recipes, and the ability to produce a specific hand-feel that a customer expects when they touch a scarf priced at 400 euros. Swap that mill for a cheaper one and the product changes. That is leverage.
This lesson traces where power actually sits upstream in the fashion supply chain, why it sits there, and how the smartest brands claw it back.
Follow a garment backwards from the store:
1. Retailer / brand (Zara, Gucci, Nike)
2. Cut-and-sew factory (the "CMT" stage: Cut, Make, Trim, meaning the factory assembles the garment)
3. Mill (weaves or knits the fabric)
4. Yarn spinner
5. Raw material (cotton, wool, silk cocoons, oil for polyester)
Most brands sit at step 1 and outsource everything below. That outsourcing is the source of their vulnerability.
Power in any supply chain comes from a few classic levers. In fashion, three matter most.
Some capabilities cannot be moved or copied quickly.
When the input *is* the differentiation, the supplier captures margin.
Even a generic factory gains power once a brand depends on it. Moving production means re-sampling, re-testing quality, re-auditing for compliance, and rebuilding trust on delivery dates. That can take a full season or two. During that window, the factory has leverage on price and terms.
Cut-and-sew is geographically concentrated. Vietnam and Bangladesh are dominant for apparel volume; China remains the largest single apparel exporter globally. A Vietnamese factory that has invested in a brand's specific processes (say, technical sportswear seam-sealing for a Nike or Lululemon program) is not easily replaced, because that technical capability plus scale plus reliability is rare.
For a sense of how concentrated sourcing is, the WTO trade statistics portal tracks textile and apparel export shares by country and is free to explore.
Despite the above, in most of the market the *brand* holds the whip. Why?
Fragmentation downstream vs. upstream. There are thousands of cut-and-sew factories competing for orders. For a basic cotton t-shirt, the brand can play factories against each other. The factory is a price-taker.
The brand owns the customer. The consumer wants the Nike swoosh, not the factory's name. Demand attaches to the brand, so the brand captures the largest slice of the final price.
Order size as a weapon. A brand placing millions of units can dictate terms to a factory whose entire year depends on that order. This is buyer power in its purest form.
So the real picture is a split market:
Take a mid-market woven cotton shirt retailing at 60 euros in Europe (illustrative estimate, not a specific company's figures).
Simple calculation of the factory's slice:
Retail price: 60.00 EUR
Factory CMT charge: 3.00 EUR
Factory slice of retail = 3.00 / 60.00 = 5%The factory touches the physical product most, yet captures the least. That mismatch is the whole story of upstream power: doing the work is not the same as holding the leverage.
(These are rough, widely cited industry estimates for illustration. Actual splits vary hugely by category, brand positioningbrand positioningThe mental space you want your brand to occupy in your target customer's mind relative to alternatives.View full definition →, and season.)
Inditex (Zara's parent) is the textbook case of a brand refusing to be held hostage upstream.
Partial vertical integration. Zara keeps a large share of production close to home (Spain, Portugal, Morocco, Turkey) and owns or tightly controls fabric-cutting, dyeing, and finishing capacity. It buys undyed "greige" fabric in bulk and dyes it late, based on real demand. Controlling the dyeing step means Zara, not a supplier, decides colors at the last minute.
Speed as leverage. Because Zara can design, produce, and ship a new style in a few weeks (versus months for traditional brands), it does not depend on any single supplier's long-lead commitment. Short runs, frequent reorders. This keeps every supplier replaceable and hungry.
Proximity over pure cost. Zara deliberately accepts higher unit labor costs in nearby factories to gain flexibility and control. Rivals chasing the lowest CMT price in distant Asia gave suppliers more leverage and gave themselves slower reaction times.
The result: Inditex protects its margins by making sure no upstream player can dictate price, color, or timing.
Knowledge check
1. A small Como silk mill can say 'no' to a large fashion house. What fundamental principle of supply chain power does this illustrate?
2. Following a garment backwards through the chain (retailer → CMT factory → mill → spinner → raw material), why does sitting at step 1 and outsourcing everything below create vulnerability for a brand?
3. The lesson states that 'when the input IS the differentiation, the supplier captures margin.' What is the underlying reason for this dynamic?
4. Select ALL correct answers. Which factors give upstream fashion suppliers genuine leverage over brands?
Select all the correct answers.
5. Select ALL correct answers. Based on the reasoning in the lesson, which of the following would REDUCE a brand's vulnerability to upstream suppliers?
Select all the correct answers.
Three forces are changing who holds power upstream.
Regulation is now a supplier-power multiplier. New rules force brands to know and prove what happens upstream, which raises switching costs and rewards suppliers who are already compliant.
Effect: a supplier that is already traceable and audited becomes more valuable and harder to swap out. Compliance capability is a new form of leverage.
Raw material volatility. Cotton and synthetic fiber prices swing with weather, energy costs, and geopolitics. When input prices spike, integrated players who locked in capacity or materials early gain an edge over brands exposed to the spot market.
Nearshoring. Rising Asian wages, freight shocks (recall the pandemic and Red Sea shipping disruptions), and speed demands are pushing more Western brands toward Turkey, Morocco, Mexico, and Eastern Europe. This partly copies the Zara playbook and slightly weakens far-Asia factory leverage for fast fashion.
Ask two questions about every input:
1. Is it differentiating or commodity? If differentiating (a signature fabric), expect to share margin with the supplier or integrate to own the capability.
2. How fast can I switch? The longer the switch, the more power sits upstream, and the more you should either dual-source or bring it in-house.
Vertical integration is not free. It ties up capital and reduces flexibility if demand drops. Zara accepts that cost because control and speed protect its margins. A small luxury house may instead accept high supplier power and simply build a long-term partnership with its Como mill, because the fabric *is* the product.