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3W Metal USB Desk Fan LS-904
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 low-quality motor (ENG-001) overheats due to poor bearings, leading to premature product failure (RMA-001) and customer complaints (REV-002).
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