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500ml (17 oz) 5-in-1 Electric Essential Oil Diffuser Humidifier with Color Control
Brand: Generic / OEM
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Audited BOM: 8 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 selection of a low-purity ultrasonic transducer (ENG-002) is the direct cause of mist production failure (RMA-001), leading to customer complaints about the product not working or having weak mist (REV-001, REV-004).
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