How should compatibility with round and irregular bottles be verified on a commercial labeling machine?

Verify guide rails, bottle handling, label-head adjustment, and orientation control for both round and irregular containers. The buyer should request drawings, parameter limits, and test records so the delivered configuration can be checked objectively. Keep the approved sample and test conditions as a reference for later service, warranty, and performance disputes. The same technical definition should be used during quotation, FAT, delivery inspection, and SAT whenever possible. If the supplier cannot reproduce the agreed test conditions, the claimed capacity should not be treated as a directly comparable figure.