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Dongguan, Guangdong · near Shenzhen

Our Factory: Full Production Under One Roof

Injection molding, cable processing, assembly, acoustic testing, aging and packing — all in our own workshop in Dongguan, next to Shenzhen. Visit us, or book a live video tour.

20+ yrsMaking earphones since 2005
150,000pcs daily output
4.5M+pcs monthly capacity
15 daysMass production
100%Function tested
Factory videos

Watch Our Factory at Work

Real footage from our workshop in Dongguan, near Shenzhen — assembly, testing and packing.

Production chain

Molding to Packing, All In-House

We control every step that affects quality and lead time — no outsourcing of assembly or testing.

Injection molding
Injection moldingPlugs and housings molded in-house
Cable processing
Cable processingCutting, stripping and wiring
Soldering & assembly
Soldering & assemblyDedicated lines for each style
Acoustic & RF testing
Acoustic & RF testingSound curve and signal checks
Aging test
Aging testBattery and long-run reliability
Packing & dispatch
Packing & dispatchBoxed by hand, then shipped

Key equipment

Injection molding machinesPin-inserting injection moldingAutomatic dispensing machinesCopper buckle machinesFixture press tablesCCD testersRF shielded roomsAcoustic curve testersBattery aging racksTemperature & humidity chambersRoHS material analyzerMaterial safety room
Production

Assembly Lines

Assembly line
Assembly line
Earbud assembly
Earbud assembly
Precision soldering
Precision soldering
Component prep
Component prep
Cable processing
Cable processing
Line overview
Line overview
Quality control

Testing Lab

Sound, signal, battery and material checks before anything ships.

RF shielded test box
RF shielded test box
Acoustic curve test
Acoustic curve test
Battery aging test
Battery aging test
Button & plug life tester
Button & plug life tester
RoHS material analyzer
RoHS material analyzer
Temperature & humidity chamber
Temperature & humidity chamber
Third-party testing

Safety-Tested by an Independent Lab

20 of our models have been tested by Shenzhen GVT Testing Technology Co., Ltd. to GB 4943.1-2022, China's national safety standard for audio, video and IT equipment (a modified adoption of IEC 62368-1:2018). Every sample complied.

20models tested, all passed
GB 4943.1-2022based on IEC 62368-1:2018
Apr – Aug 2026reports issued

Full reports are in Chinese and are sent on request with your quotation. Selling in the EU, US or another market? Tell us where, and we will confirm which test documents are available for the model you choose.

Request Test Reports
Warehouse & shipping

From Incoming Parts to Your Shipment

What happens around the production line: parts are checked before use, materials are staged by order, and finished units are boxed by hand before they ship.

  1. Incoming inspection
    Incoming inspection

    Plastic parts and packaging materials are checked at dedicated benches before they go to the line.

  2. Material warehouse
    Material warehouse

    Parts and materials are staged by order in the material preparation area.

  3. Retail boxing
    Retail boxing

    Earbuds, manual and accessories go into the retail box — neutral, or your own branded box.

  4. Packing line
    Packing line

    Each unit is placed in its insert and closed by hand on the packing line.

  5. Shipping

    Express, air or sea — to your door or your forwarder. In-stock orders ship in 3–7 days.

Our people

Meet the Team

Head office reception
Head office reception
Our team leads every factory tour
Our team leads every factory tour
Production workshop
Production workshop
QC technician at work
QC technician at work
Live video tour

See the line that will make your order

Pick a time — we will call you on WhatsApp or Zoom and walk you through assembly and testing.

    Get a Quote


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