A second conveyor belt supplier can reduce sourcing concentration risk, but only when the alternative factory is technically qualified before an urgent order occurs. This guide shows importers, procurement teams and distributors when dual sourcing makes sense, how to align belt specifications across factories, what capability and quality evidence to verify, and how to structure a comparable RFQ. It also explains the trade-offs of supplier diversification and how to qualify a China factory without turning the decision into a lowest-price exercise.