TWS Bluetooth Earbuds OEM Process Flow
Project Start
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【1. Collect Customer OEM Requirements】
├─ Functional specs (Bluetooth version, ANC, battery life, waterproof rating)
├─ Appearance color (Pantone code) and shape
├─ Logo source files (AI/CDR/PDF)
├─ Bluetooth pairing name & voice prompts
├─ Target market certifications (CE/FCC/RoHS/BQB)
└─ Order quantity, MOQ, and delivery schedule
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【2. Packaging Design】
├─ Color box, manual, and accessory (cable/ear tips) design
├─ Multi‑language texts and compliance markings (barcode, certification labels)
└─ Submit design draft to customer for approval → make packaging samples
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【3. Logo Printing Confirmation】
├─ Confirm printing process (laser engraving / screen printing / UV)
├─ Customer provides final vector logo files
└─ Make printing fixtures/stencils for mass production
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【4. Sample Making and Approval】
├─ Produce engineering samples (2‑5 units) with logo and packaging
├─ Customer tests: appearance, Bluetooth connection, call quality, touch control, battery life
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┌─ Customer signs off on samples? ─────────┐
│ (No) │ (Yes)
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Provide modification feedback Both parties retain the
→ re‑make samples “Golden Sample” as standard
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└──────────────┬───────────────────────────┘
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【5. Production Stage】
├─ Raw material procurement & incoming inspection (IQC)
├─ SMT placement + firmware flashing
├─ Assembly + dispensing for waterproofing
└─ Print logo on mass‑production units (per approved process)
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【6. Quality Control (throughout the process)】
├─ In‑process inspection (IPQC) – every 2 hours
├─ Semi‑finished & finished product functional tests:
│ Bluetooth pairing, audio output, call noise reduction, touch sensitivity
├─ Reliability tests: high/low temperature, humidity, vibration, plug‑unplug life
└─ Final AQL random inspection (FQC/OQC) per ISO 2859‑1, Level II
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┌─ QC passed? ────────────────────────────┐
│ (No) │ (Yes)
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Rework / scrap Proceed to packing
→ re‑inspect │
│ │
└──────────────┬───────────────────────────┘
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【7. Packing】
├─ Pack each set into color box (earbuds + ear tips + charging cable + manual)
├─ Pack color boxes into export cartons with cushioning material
└─ Affix shipping marks, product labels, and barcodes on cartons
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【8. Shipping】
├─ Pre‑shipment final random inspection (optional)
├─ Prepare shipping documents:
│ Commercial invoice, packing list, bill of lading
│ Certificate of origin, product test reports (CE/FCC/RoHS/BQB)
├─ Arrange logistics per Incoterms (FOB / CIF / DDP)
├─ Customer pays balance (usually 70% of total)
└─ Notify customer with tracking number and estimated arrival date
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Project Completion
