# 采购决策 ## Articles ## [Supplier due diligence: separate identity, delivery capability, and sample evidence](./supplier-due-diligence-identity-capability-sample-evidence.md) 2026-09-12 A registration document can identify a business. It cannot prove it can meet your artwork, quantity, quality, and delivery date. Treat identity, capability, and sample evidence as separate questions. ![Two unbranded tumblers with fabric and color samples, a caliper, and a kraft box arranged for product inspection.]() ## [How to compare custom-product quotes when the scope is not the same](./compare-custom-product-quotes-total-procurement-cost.md) 2026-09-12 A low unit price can describe a smaller order, a different decoration, an earlier handoff, or costs that have simply been left outside the quote. Compare the completed buying scenario instead. ![Unbranded tumblers, canvas totes, color swatches, and a shipping carton arranged as two product options on a sunlit table.]()