Agree the checkpoint with your supplier
Tell your supplier that you want a sample tested before the main shipment leaves China. Agree when the sample will be made available, who will arrange domestic delivery, and which decision you want to make after reviewing the report.
Shipment holds, final-balance payment timing, and any acceptance terms are matters between you and your supplier. We do not hold funds, release shipments, or negotiate commercial conditions.
Confirm testing timing before setting a deadline
Contact us with the sample name, number of samples, requested methods, and your intended decision date. Turnaround time depends on receipt, scope, and current availability; there is no fixed time promised here.
Allow for domestic delivery and report review when planning the order. Ask whether the expected timing supports your purchasing checkpoint before instructing the supplier to send material.
Use a practical pre-shipment sequence
A clear sequence reduces confusion between the sample parcel and the main shipment. Each participant should understand what they are responsible for.
- Buyer contacts us and confirms the analytical scope.
- Buyer agrees sample access and shipment timing with the supplier.
- Supplier sends the labeled sample domestically within China.
- The submitted sample undergoes the agreed HPLC / MS testing.
- Buyer receives and reviews the English PDF report.
- Buyer decides whether to authorize shipment under their supplier agreement.
Review before making the commercial decision
Read the report alongside your order requirements and supplier COA. If a finding is unclear or appears different from the supplier document, clarify the sample references and analytical scope first.
A report adds evidence; it does not prescribe the outcome of a purchase. Decide whether the information is sufficient for your order or whether another question needs to be addressed before you proceed.
Understand what the checkpoint cannot guarantee
The report applies only to the tested sample. It cannot prove that every unit is identical or that material shipped later is the same as the sample. A specially selected supplier sample remains a sampling limitation.
For higher-value orders, buyers may consider additional sampling arrangements or testing multiple samples. Discuss those needs early, while keeping standard sample analysis separate from any unconfirmed inspection or sampling service.