Most failures on stainless steel cleanroom panels​ are not mill defects — they are made on the jobsite. Cross-contaminated cutting wheels, carbon-steel fasteners, unprotected stacking, unsealed cut edges, abrasive pads on the face, premature film removal and discontinuous silicone beads are the exact items that turn an audit-grade wall into a rework list. This module gives procurement engineers, cleanroom GCs and pharma/food project supervisors a field-ready work sequence for incoming inspection, covered storage, stainless-only cutting, edge passivation, joint sealing and punch-list acceptance tied to GMP, ISO 14644 and hospital OR sign-off. SAMZOON, a Foshan source manufacturer, anchors the checklist with factory prefab openings, batch mill certs, free samples and on-site node review for South China purification projects.