China Inspection

CTS SERVICE LIMITED
Shenzhen WeCheck CTS Co Ltd

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Preshipment Inspection > Bluetooth Tws Wireless Headset Headphone Earphone Speaker Router Wifi


The inspection procedures for this lines of products are:

  • On-site safety, regulation, & function testing
  • Packaging, safety and drop tests
  • Measurements & sizes check
  • Product specs, and special requirements check
  • Quantity & assortment verifying
  • Aesthetic, workmanshipment, surface and function check
  • Labels, markings, logos & barcode check

Our Checklist for Bluetooth speaker pre-shipment inspection:

  • Perform a carton drop test on the export cartons:10 times(1 corner 3 edges 6 faces)
  • Smell check-check if there are any strong offensive odor-II
  • For 3M tape adhesive test: perform test on coating (painting/plating/ screen printing, etc) with 3M tape.-S2
  • Perform a rub test for printing and marking ; -S2
  • Perform a function test - match and receive the Bluetooth signal.
  • - Connect time – within 6 seconds
  • Perform a fatigue test for all adjustable part.
    For each button function, including power on/off, volume +/-, forward/backward.
    Perform a check for blue tooth range and phone check(6-10m) -S2
  • Perform wobble test, put the unit on the flat surface, the unit should not tip or wobble during the test.
  • Perform an endurance test (life test) during the whole inspection period
  • Internal performance check. –S1
  • Talkback function: MIC
  • Battery Voltage / Capacity: 5V +/- 0.5V
  • output power: 2M (1K HZ, THD 10%)
  • Perform a Hi-pot testing -II
  • Perform the standard power test-II
  • Power consumption check:3Wx2(W=U2/R)
  • .......

earphone quality assurance

Visual Inspection Checklist (a random example):
DEFECTIVES LIST
CRI MAJ MIN Picture
Dent mark 1pc
Scratched mark 2pcs
Broken 3pcs


3rd party preshipment products goods factory onsite inline final Random AQL PSI TPI FRI DUPRO third party on-site in-line pre-shipment QA QC check quality control assurance inspection services in China India Vietnam Thailand Malaysia Bangladesh Taiwan.


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