Supplier Due Diligence Checklist
Use this before payment or onboarding.
Tooling risk
Tooling changes a sourcing relationship. The buyer pays before it receives finished goods, and the supplier gains leverage through a physical asset that may sit inside its factory. A tooling order needs a stronger file than a normal sample purchase.
Buyers often use the word tooling for several assets: molds, fixtures, jigs, dies, test rigs, packaging plates, or product-specific software. Name the asset. Describe where it will be made, who will hold it, who can use it, and what happens when the relationship ends.
The supplier's quotation should separate tooling cost from unit cost. If the supplier buries tooling inside the product price, the buyer may struggle to claim ownership later. A clean quotation states the tooling item, price, payment schedule, expected life, maintenance responsibility, and ownership terms.
Tooling ownership depends on more than a contract sentence. The buyer should know which legal entity takes payment, which factory holds the tool, and which entity has physical control. If the seller is a trading company and the tool sits at a related factory, the buyer needs that relationship in writing.
Ask for the Chinese legal name of the site that will hold the tool. Ask whether the tool will be marked, photographed, insured, or stored in a specific area. These details sound operational, but they become evidence when the supplier refuses transfer or uses the tool for another customer.
A tooling payment schedule should match evidence. The buyer can pay a deposit when the supplier confirms design and entity details. The next payment can follow tool completion photos or trial-shot samples. Final payment can follow sample approval and written confirmation that the tool is stored for the buyer's order.
Avoid paying the full tooling amount before the buyer has any evidence. Also avoid vague milestones such as 'after mold is ready' without defining who confirms readiness. The buyer should state what document, photo, sample, or inspection triggers each payment.
The contract should state whether the supplier can use the tool for other customers. It should also state whether the buyer can move the tool to another factory, who pays transfer cost, and what notice the supplier needs. A buyer that ignores transfer terms may find itself tied to a weak supplier because the tool cannot move.
If the supplier refuses transfer rights, the buyer can still proceed, but it should price that lock-in. A lower unit price may not offset the cost of being unable to switch factories after quality or delivery problems.
Create a tooling register for each asset. Include name, drawing number, supplier, holding site, payment status, ownership term, photo record, maintenance rule, and transfer rule. Update it after sample approval and after each production run.
A tooling register is not paperwork for its own sake. It gives the buyer memory. When staff change or the supplier relationship weakens, the register tells the next person what the company paid for and what rights it kept.
Tooling risk grows after the first successful shipment because the buyer starts to depend on the supplier's version of the product. A supplier that stores the mold, keeps the drawings, and understands the adjustment history can gain leverage without changing the contract. The buyer may only discover the problem when it asks for lower pricing, faster replacement, or a move to another factory.
Before production starts, buyers should ask where the tool will sit, how it will be marked, who may access it, and what happens if the order volume stops. For paid tooling, request photos of the nameplate, a tooling ledger, maintenance notes, and a handover process. These records make ownership visible while the relationship is still cooperative.
It should define the tool, ownership, holding site, payment milestones, use restrictions, maintenance responsibility, and transfer rights.
Full upfront payment increases risk. Buyers should tie payments to design confirmation, tool completion evidence, sample approval, and storage confirmation.
It identifies the entity paid, the site holding the tool, and the relationship between seller, factory, and payee before the buyer loses leverage.
Use this before payment or onboarding.
Keep a record finance can review.
Choose the right depth for the decision.