Sourcing Ingredients from China: A Buyer's Checklist

Start with documentation, not price. Ask for the specification sheet and a recent batch COA in the first exchange. A supplier who cannot produce them quickly is telling you something useful.

Confirm what is actually held in stock versus what is sourced to order. Lead-time surprises cause more damage to a launch schedule than a few cents per kilogram ever will.

Sample and verify independently. A supplier who arranges third-party verification pre-shipment on request is easier to work with than one who treats the request as an insult.

Clarify trade terms, destination port and payment terms in writing before the first order, and keep the entire quotation — spec, COA, freight basis, lead time — in one document you can hand to your own QA.

Finally, judge responsiveness. Over a two-year supply relationship, how fast someone answers a question about a batch matters more than the opening quotation.