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120ml (4.1 oz) Ultrasonic Humidifier LED Light EL-5502
Brand: Generic / OEM
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Audited BOM: 10 Components
RMA Chain & Defect Intelligence
Root cause causal graph linking factory engineering flaws to verified consumer return reasons.
⚡ Causal Link: Defect to Consumer Return
The lack of a reliable water level sensor (ENG-001) leads to dry operation of the ultrasonic plate (COMP-002), causing premature failure (RMA-001), which is reported by users (REV-002).
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