What Is Supplier Diversification?
Supplier diversification reduces your dependence on any single supplier. A critical strategy for supply chain resilience.
Key Takeaways
- Single-source dependency creates concentration risk — one disruption stops your business
- China-plus-one is a common strategy: maintain China supply while developing an alternative
- Dual sourcing trades some cost efficiency for significant risk reduction
- Diversification takes 12-24 months — start before you need it
The risk of single-source supply
Many eCommerce businesses source all of a key product from a single supplier in a single country. When everything works, this maximises purchasing power. When it fails — a factory fire, a port strike, a pandemic, a trade dispute — the business has no alternative and supply stops. COVID-19 exposed the fragility of single-source supply chains across every industry.
China-plus-one strategy
China-plus-one is the strategy of maintaining Chinese manufacturing while simultaneously developing a secondary manufacturing base in another country — Vietnam, India, Bangladesh, and Mexico are the most common choices. The primary supplier provides cost efficiency. The secondary provides resilience and reduces geopolitical concentration risk.
Dual sourcing
Dual sourcing means splitting a product's procurement between two suppliers — typically 70:30 or 60:40. The primary supplier gets the majority of business and therefore maintains pricing incentive. The secondary maintains active production capability and can scale up rapidly if the primary fails. The trade-off versus single sourcing is slightly higher unit cost and more management complexity.
Qualifying a second supplier
Qualifying a new supplier takes time: initial sourcing and sample evaluation (4-8 weeks), sample approval and quality testing (4-8 weeks), trial order and production audit (8-12 weeks), then regular orders to keep the relationship active. Total: 6 to 18 months from decision to active, reliable secondary supply. Start well before a disruption.
Managing the relationship
A qualified secondary supplier who receives no orders for 12 months is not a real backup — they may have deprioritised your tooling or taken on other clients. Maintain secondary suppliers with regular small orders, even if not commercially necessary, and with annual factory visits or quality audits. A relationship maintained is a backup that actually works.