Before greenlighting a full production run, responsible manufacturers implement a rigorous sample handling process. This phase is crucial for verifying design integrity, material quality, and assembly feasibility. The process typically begins with the receipt of Engineering Prototypes or Pilot Run samples from the production line. These units are not just visually inspected; they undergo comprehensive testing in controlled environments. Quality engineers assess dimensions against CAD specifications, test functional performance under simulated use conditions, and evaluate material finish and durability. Feedback is meticulously documented, often involving cross-departmental reviews with design, engineering, and procurement teams. Any deviations—a slight color mismatch, a tolerance issue, or a component fit problem—are flagged. The factory then makes necessary adjustments to molds, tooling, or assembly instructions. This cycle may repeat through several sample revisions until all stakeholders grant final approval. This disciplined approach prevents mass production of defective goods, saving significant costs and protecting brand reputation. It transforms the sample from a mere formality into a vital checkpoint for manufacturing excellence.