In-process
Assembly line control
Handles are assembled and charged on a single line. Each operator works one station, and work-in-progress is photographed at the end of every shift.
Ten gates between a part and a shipping carton
These are photographs of equipment running in the Dongguan plant, with the acceptance criteria printed on the signs above them.
100 % of units
Charging & ageing
Every finished handle goes onto the charging-ageing racks, so a cell or charging fault shows up here rather than in a customer's bathroom.
Batch sample
Noise test room
A sound-insulated room, tested against a ≤45 dB ambient baseline. The sample is measured at 10 cm on the main axis; the criterion is an even, harmonic sound with no abnormal or intermittent noise.
200 h
Motor ageing bench
Continuous running for 200 hours minimum, through warm-up and cool-down cycles, with temperature and humidity logged and stable current and voltage recorded at fixed intervals.
5,000 / 10,000 cycles
Insertion & switch life
Switch actuation tested to 10,000 cycles, brush-head and Type-C plug tested to 5,000 cycles, all at 1.0–2.0 kgf. The product must remain fully functional and the click-feel unchanged.
100 % of motors
Stator comprehensive test
Electrical strength, insulation, inter-turn short circuit, resistance, inductance and electrical balance are measured on every stator before it enters assembly.
IPX7
Roundness & waterproofing
Shaft concentricity is measured on a roundness instrument. Waterproofing follows the IPX7 protocol — 30 minutes of immersion followed by a pneumatic leakage check.
500 cycles
Finished-goods ageing
Complete units run 500 charge/discharge cycles in an instrumented cabinet. Current must stay within tolerance, there must be no water ingress, and all LEDs must remain correct.
Temp & humidity
Environmental chamber
Programmable temperature and humidity cycling to expose battery and seal failures that only appear outside a temperature-controlled workshop.
Batch logged
Storage & traceability
Finished goods are palletised with model, colour, quantity and batch marked on each carton, so a delivered box can be traced back to its ageing record.
What is actually measured
Every unit passes charging ageing and functional test. Each batch is sampled against the criteria below, and the record stays with the batch number.
Traceability
Each carton carries model, colour, quantity and the production batch. Tell us the batch number from a carton and we can pull its ageing record.
Inspection on request
Third-party pre-shipment inspection (SGS, Bureau Veritas, Intertek or your own agent) is welcome. We would rather find the problem in Dongguan than in your warehouse.
Motor assembly cell
Assembly conveyor
Workshop floor
Automated assembly
Automation control cell
Contact
Ten gates between a part and a shipping carton
Third-party pre-shipment inspection (SGS, Bureau Veritas, Intertek or your own agent) is welcome. We would rather find the problem in Dongguan than in your warehouse.