What Single-Source Dependency Actually Looks Like

Single-source dependency is easy to accumulate and hard to notice until it matters. It usually starts with one good factory relationship on one important program. The factory performs. The relationship deepens. New programs go to the same factory because they've earned the trust and the onboarding friction of a new supplier feels unnecessary.

Over time, without anyone making a deliberate decision, a meaningful percentage of your revenue is running through one facility. One factory. One management team. One production floor. One set of risks.

The Events That Break Single-Source Programs

The sourcing industry has a long list of factory disruptions that seemed unlikely until they happened.

Factory fires are more common in Chinese manufacturing than most importers realize. A fire that shuts down production for three months — or permanently — with no backup source is an existential event for the programs running through that facility.

Labor disputes and strikes are periodic realities in manufacturing regions, particularly around Chinese New Year and during periods of wage pressure. A factory shut down by a labor action has no obligation to prioritize your recovery over anyone else's.

Ownership changes happen. A factory acquired by a new owner — or a key manager who leaves and takes institutional knowledge with them — can change the performance profile dramatically and quickly.

Regulatory shutdowns occur when factories fail environmental inspections, safety audits, or local government compliance requirements. These can happen with little warning and can last weeks or months.

Quality failures that require a production halt to investigate and remediate can take a program offline at exactly the wrong moment — peak season, retailer deadline, holiday delivery window.

What Dual Sourcing Actually Requires

Dual sourcing isn't just having the name of a second factory in a file somewhere. It requires a second factory that is qualified, has produced your product successfully, and can absorb meaningful volume on short notice.

That means sampling. It means a production trial. It means at least one real order that goes through inspection and delivery. A factory that hasn't actually produced your product under real conditions is not a backup — it's a lead.

How to Structure a Dual-Source Strategy

The most practical approach for most importers is a 70/30 or 80/20 split on critical programs — the majority of volume with the primary factory, a meaningful minority with the qualified backup.

The backup factory gets enough volume to stay current on your product and specifications, to maintain the relationship, and to be able to scale quickly if needed. They don't get so little that the relationship atrophies and the qualification becomes meaningless.

This structure also creates healthy competitive pressure. A factory that knows it shares a program with a qualified alternative has more incentive to perform than one that believes it has no competition for your business.

The Programs That Need It Most

Not every program needs dual sourcing. The investment should be proportional to the risk of single-source failure.

The programs that need it most: your largest volume programs, your most time-sensitive retail programs, your highest-margin SKUs, and any program where the product involves tooling or proprietary specifications that would take significant time to recreate at a new factory.

Start there. Build redundancy into your most critical dependencies before you worry about the rest.

Have you been caught without a backup source when a factory went down — and what did it cost you? We'd like to hear what the experience changed about how you manage your factory base.