Quality

Anyone canstop the line.

Eight stations, each with a light. When one turns red, nothing downstream moves until the fix is verified.

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Andon · Order SRC-24117H07V-R 2.5 mm² building wire · 48 reels × 500 m · Ningbo → Rotterdam09:42 CST

01Factory auditClearOn approved list since 12 Mar 2026.
02Golden sampleClearSigned by you 02 Sep. Sealed and filed as GS-0917.
03Pre-productionClearCopper rod, PVC compound and dies checked 18 Sep.
04In-line inspectionStoppedInsulation 0.57 mm on reel 14. Minimum is 0.62 mm.
05Pre-shipment inspectionLockedStarts when station 04 clears.
06Lab testLockedSpark, conductor resistance, wall thickness.
07LoadingLockedReel count, container seal, photos.
08ArrivalLockedCount and condition at your dock.

Line stopped 09:14 CSTStation 04 · Pulled by inspector L. Chen

The andon cord

Toyota hung a cord over every station. We hung one over every order.

A stop costs us days. A defect that ships costs you far more.

Who holds the cord

InspectorsAny reading outside spec stops the order on the spot, no sign-off.
Our agentsWhen documents disagree, the order stops itself.
YouOne button in your order view; the factory is told why.

Stop log · SRC-24117 · ExampleAll times CST

Day 1 09:14FlagInspector L. Chen cuts reel 14 mid-length. Insulation reads 0.57 mm against a 0.62 mm minimum.
09:15Line stoppedStation 04 turns red. Stations 05 to 08 lock. No reel can be packed, tested or booked.
09:22You're toldReadings, 14 photos and the cut sample's measurements land in your order view.
Day 2Root causeOff-centre extrusion die on line 3. Now a rulebook check.
Day 4FixReels 11 to 16 scrapped and re-extruded at the factory's cost. Die re-centred, gauge restored.
Day 6 14:40Verified, released32 mid-reel cuts re-measured, all at or above 0.71 mm. Station 04 clears; the line restarts.

When the light is green

You see what the
inspector saw.

A report written for the buyer, not the factory, in your inbox before the goods leave.

Sample report

PSI-24-0817 · Order SRC-11402

Pre-shipment inspection

THHN copper building wire, 12 AWG, 500 ft reels

Lot accepted

Factory: Ningbo, CN
Lot size: 6,000 reels
Sample: 200 · Level II
AQL: 0 / 1.0 / 2.5

Check	Spec	Measured	Result
Conductor diameter	2.05 mm ±0.02	2.05–2.06 mm	Pass
Insulation thickness	≥ 0.38 mm	0.40–0.43 mm	Pass
DC resistance at 20°C	≤ 5.21 Ω/km	5.12 Ω/km	Pass
Print legend and UL mark	Artwork rev. C	Matches	Pass
Reel length	500 ft ±1%	501–504 ft	Pass
Carton labels and barcodes	GS1-128, 4 sides	2 labels offset	Minor ×2

Conductor diameter
Pass
Spec
2.05 mm ±0.02
Measured
2.05–2.06 mm
Insulation thickness
Pass
Spec
≥ 0.38 mm
Measured
0.40–0.43 mm
DC resistance at 20°C
Pass
Spec
≤ 5.21 Ω/km
Measured
5.12 Ω/km
Print legend and UL mark
Pass
Spec
Artwork rev. C
Measured
Matches
Reel length
Pass
Spec
500 ft ±1%
Measured
501–504 ft
Carton labels and barcodes
Minor ×2
Spec
GS1-128, 4 sides
Measured
2 labels offset

Critical: 0/ 0 allowed
Major: 0/ 5 allowed
Minor: 2/ 10 allowed

Reel label
Diameter
Spark test
Cartons

Poka-yoke

Some mistakes we don't catch.We make them impossible.

Inspection finds errors. Error-proofing removes the chance to make them.

PY-01Factory quietly swaps the PVC compound for a cheaper gradeSpec locked to a signed golden sample
PY-02Right reel, wrong labelLabels generated from the order
PY-03Paperwork that doesn't match what's in the boxAutomated cross-checks
PY-04A lot passes on a hand-picked sampleInspector draws the sample

Acceptance limits on every order: Critical 0 · Major 1.0 · Minor 2.5, sampled at General Inspection Level II. Tightened for retail-bound or regulated products.

The rulebook

Every fix becomesa permanent check.At every factory.

The rulebook only grows, and so does the floor on what ships.

One stop, taken to the root — SRC-24117

Why was the insulation thin?Die off-centre on line 3.
Why?Swapped on night shift, set by eye.
Why wasn't it caught?In-line gauge bypassed for six weeks.
Why didn't we know?Our audit checked the plant, not each line.

Root causeOur audit, not the factory.

Now a rulebook check: every extrusion line must show a working gauge and calibration log before an order is placed.

Agents on every order

The spec is the law.Our agents enforce it.

From the moment you approve a golden sample, our agents hold every document and every reading against it — the PO, the mill certificate, the packing list, the inspector's measurements. When anything disagrees, the order stops and you're told why. Inspectors see the floor; the agents see the paperwork, the numbers and the history, and they don't get tired at the end of a shift. Every stop becomes a check they run on the next order.

Nothing ships until it matches what you approved.