Magnesium oxysulfate cleanroom panels are engineered to solve the chronic "halogen bleed" and moisture instability of traditional magnesium oxide boards, making them ideal for high humidity cleanroom wall systems, food processing plant wall panels, and non halogen cleanroom partitions. However, field failures such as white salt deposits (efflorescence), panel bowing, edge crumbling, screw pull-out, and A1 fire rating discrepancies can derail project handovers in tropical, coastal, or high-sanitation environments. This module converts the five highest-frequency site failures into a QA-grade troubleshooting map for cleanroom GCs, food & beverage engineers, and procurement managers. SAMZOON, a Foshan source manufacturer, anchors the guide with anti efflorescence magnesite panel​ technology, free pre-bid samples, and South China wet-process project QC.