Electronics > Portable Audio & Video > Portable Bluetooth Speakers
5V DC Bluetooth FM USB TWS Portable Speaker
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 use of low-quality batteries without adequate protection (ENG-001) leads to failures such as swelling and inability to charge (RMA-005), generating customer dissatisfaction (REV-002, REV-004) and safety risk.
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