Sleeving
Cells are sleeved automatically, which is what puts the printed wrap and the polarity marking on straight every time.
Factory & Quality
Where the cells are assembled, tested and packed.
PUJIMAX runs assembly, testing and packaging lines at its Dongguan site, with four inspection stages between incoming material and the sealed carton.
Ask for the plan
We can share the inspection criteria and sampling plan for your model as part of the quotation.
Factory & Quality
A Dongguan operation you can visit.
The company has been registered in Wanjiang, Dongguan since 2014 and exhibits at the Canton Fair and HKTDC. If you want current line photos, headcount or floor area for a supplier audit, ask us and we will send the dated site record rather than a number off a marketplace profile.
Production flow
Five steps from a bare cell to a marked one.
This is the battery flow at the Dongguan site. On an OEM run, step five is where your branding goes on.
Moulding
The moulding area forms components to the shape the cell or charger housing needs.
Filling
Automatic liquid filling — the dosing step that decides whether cells in the same batch behave the same way.
Capping
Caps are seated and closed automatically, the seal that keeps the cell from leaking in a customer's device.
Laser marking
Parameters and logo are laser-engraved rather than printed, so the marking survives handling. This is also where your branding goes on an OEM run.
Production lines
Six lines, staffed and with QC on each.
Assembly, test and packaging run as separate lines, each with its own in-line quality staff rather than a single inspection at the end.
| Production lines | Supervisors | Operators | In-line QC |
|---|---|---|---|
| Assembly line 1 | 2 | 10 | 3 |
| Assembly line 2 | 2 | 6 | 4 |
| Test line 1 | 2 | 10 | 3 |
| Test line 2 | 2 | 10 | 2 |
| Packaging line 1 | 3 | 12 | 2 |
| Packaging line 2 | 2 | 10 | 1 |
As published on our Alibaba supplier profile, captured 2026-07-25.
Test equipment
What the test line runs on.
Listing only the equipment used on the current battery and charger flow. Older cable and hardware test rigs are not included.
Voltage and current testers
The workhorse of the test line — every cell and charger is checked against its rated output.
Charger integrated testers
Full-function test of a finished charger: each slot, the display and the charge behaviour.
Charger load meters
Measures what a charger actually delivers under load, not just what it reads at idle.
Charger hi-pot testers
Dielectric withstand testing on mains-input chargers, the safety check before a unit is packed.
Quality control
Four checkpoints on every order.
These are the stages your quality plan and inspection criteria get written against.
Incoming material
Cells, components and packaging checked against the approved specification.
In-process
Assembly parameters, polarity, welding and in-line function checks.
Performance
Capacity, charging behaviour and output verified against the specification.
Final inspection
Appearance, labelling, pack-out, sampling and shipping documents.
Batch context
One chain from the approved specification to the shipment files.
The exact coding method still requires company confirmation; this page shows the four buyer-facing checkpoints and deliverables.
Approved specification
Lock the model, revision, pack and inspection criteria.
Production lot
Production and in-line checks stay attached to the lot.
Pre-shipment inspection
Sampling, appearance and pack-out are signed off.
Document archive
Specifications, declarations and transport files map to the order.
Documents
What we issue, and what it covers.
Document coverage depends on the model, the chemistry and where it ships. Here is what exists and exactly what each item covers.
Issued per model with the quotation
Nominal voltage, capacity and test method, dimensions, temperature range, pack count and carton data for the model you select.
EU declarations of conformity on file
We hold manufacturer declarations covering our battery families and map them to your exact model and market before you order.
Prepared per model and pack configuration
Type-C lithium and CR123A shipments need model-specific UN38.3 and SDS. Tell us the model and how it ships and we prepare the set.
Certificate 49223Q0479R1S
Scope is production and sales of precision hardware stamping parts. We do not present it as a battery manufacturing certificate.
Start a project
Request a quoteAsk for the document set for your model.
Tell us the model, destination market and transport mode and we will list the available files, gaps and preparation route in the quotation.