Quality assurance

What we check, and what we can prove

Four inspection gates, GB2828 sampling and a signed record for every lot. The controlled documents below are the ones our inspectors work from — you can open any of them and read the actual limits, not a summary of them.

4 gatesIncoming · first article · patrol · pre-shipment
0.10 / 0.65 / 2.5AQL — critical / major / minor
GB2828 IILot sampling plan
100%Surface check before packing
01 — Process control

A lot cannot skip a gate

Goods receipt, incoming inspection, warehouse booking, issue to production, first article, run, in-process patrol, final inspection and pre-shipment. A failing lot has two exits only: written concession or rework. Nothing moves on verbal approval.

Quality control flow chart showing incoming inspection, first article, in-process patrol and final inspection with hold points
Process control chart — 品质控制流程图. Each box states the input, the responsible department, the work point and the output record.

Where the stops are

IQC
Incoming
Lot held in quarantine bay until disposition — no booking to stock before release
First article
Setup
Run stops until first piece matches the approved sample and drawing
Patrol
In-process
Non-conformance slip issued at the station; production decides rework or concession
Pre-shipment
Final
Cartons released only against a signed inspection report
02 — The four gates

What each gate checks, and what it leaves behind

Every gate answers the same four questions: what is checked, against which limit, by whom, and what record survives the shipment.

The documents shown here are the controlled templates our inspectors fill in — not sample records. A completed record carries its own record number; ask your sales contact and production will issue the copy for your batch.

GATE 01

Incoming

IQC · profiles, LEDs, substrate, kits
Checks
Section and wall thickness against drawing, alloy and surface colour, scratches and dents, LED electricals on the sphere, aluminium substrate, matching kits
Limit
Scratch ≤3 mm long, ≤0.25 mm wide, area <3 mm², one per face, lot defect rate ≤2%
Record
Incoming inspection report — supplier, lot, quantity checked, quantity defective, usable yes/no
Caliper check on an incoming bundle of aluminium profiles
Incoming lot measured on arrival — section and wall thickness against the drawing.
Template: incoming inspection record
GATE 02

First article

Setup approval before the run
Checks
BOM and order consistency, colour and LOGO, semi-finished trial fit, function and reliability of the first piece
Limit
Against the customer-approved sample, the drawing and the order sheet
Record
First article record, signed before mass production is released
First article check: measuring the setup piece and trial-fitting the diffuser
First piece measured, then trial-fitted with its diffuser before the run is released.
Template: first article record
GATE 03

In-process patrol

IPQC · during the run
Checks
Material confirmed at each station, appearance, function and reliability spot checks during production
Limit
SIP defect classes — critical, major, minor; appearance read at 30 cm under normal light
Record
Patrol log; a non-conformance slip is raised at the station when something drifts
Stock checked before issue, and finished sections lit during the patrol check
Stock checked before issue, and finished sections lit for the patrol check.
Template: non-conformance report
GATE 04

Pre-shipment

FQC / OQC · before packing
Checks
Dimensions and length, appearance, packaging and protection, net and gross weight, marking and labels
Limit
Product inspection standard plus the AQL plan below
Record
Outgoing inspection report — one set for profiles, one for housings, one for finished luminaires
Profiles wiped down and packed into cartons before shipment
Sections wiped down and packed — the last point before the report is signed.
Template: outgoing inspection report
03 — Acceptance criteria

The numbers we accept or reject against

This is the part buyers usually have to ask for. Sampling follows GB2828 general inspection level II; defect classes sit in the SIP, and the cosmetic limits sit in the incoming standard.

Sampling and defect classes

0.10Critical
0.65Major
2.5Minor
ClassMeaningConcession
CRSafety or regulatory failure — shock, fire, non-compliant markingNot allowed
MAJFunction lost, or visible at 30 cm under normal lightWritten approval only
MINCosmetic, no effect on function or installationWritten approval only

Appearance is judged at 30 cm from the eye, 45° to the viewing plane, under normal light — the same condition written into the SIP.

Cosmetic acceptance — profiles

ItemLimit
Scratch length≤ 3 mm
Scratch width≤ 0.25 mm
Scratch area< 3 mm²
Scratches per faceMax 1
Lot defect rate≤ 2%
ColourMatches the standard swatch and the end caps / fittings in the same order
AfmetingenConsistent with the drawing; section, wall thickness and length

Taken verbatim from the incoming inspection standard, section 1 — profiles.

Dial caliper measuring a profile section on the inspection bench
Every limit above is measured, not eyeballed — dial caliper on the inspection bench.
Finished goods inspection instruction sheet showing GB2828 sampling and AQL levels
成品检验指导书 (SIP), rev 1.0 — sampling plan, AQL levels and the CR / MAJ / MIN tick columns.
Incoming inspection standard listing acceptance limits for profiles, LEDs and kits
来料检验标准 — the cosmetic and dimensional limits for profiles, LEDs, substrate and kits.
04 — Test bench

What we run before it ships

Electrical, optical, ageing, hipot and switching tests are written into the SIP with fixed parameters. Packaging is tested against a separate drop standard.

Ageing run on a bank of luminaires fed from a metered AC source
Ageing run — a bank of luminaires on a metered AC source (221 V / 50 Hz on the panel).
Technician loading a linear luminaire into the integrating sphere
Integrating sphere — flux, CCT, CRI and efficacy, two pieces per lot.
Hipot (withstand)1500 V / 50 Hz / 5 mA / 3 s — no breakdown, no alarm
Ageing runRated voltage ±20%, 2 h continuous, ≥20 switching cycles — no colour shift, dark spot, dead LED or flicker
Switching life5 s on / 45 s off, 25–35 °C, 500 cycles
ElectricalCurrent ±10%, power ±15%, power factor ±0.05 at rated voltage
OpticalIntegrating sphere, 2 pcs per lot — luminous flux, CCT, CRI, efficacy against the order sheet
VerpakkingDrop standard applied to the packed carton — edge, corner and face drops before the packing spec is released
Ageing test specification for LED luminaires
合联 LED 灯具老化测试规范 — ageing conditions and pass / fail points.
Packaging drop test standard
包装跌落测试通用标准 — drop heights, orientations and acceptance.

In-house laboratories cover reliability (UV, lifetime, thermal cycling, drop, power cycling, transport simulation), environment (thermal shock, salt mist, IP68 rig), EMC and optics (IES). Test equipment includes surge and RoHS testers and an integrating sphere.

05 — When something fails

Three documents, one route to closure

A defect is not closed when it is reworked. It is closed when the cause is written down, the countermeasure is checked, and the slip is signed off under its record number.

STEP 01Non-conformance slip

Raised at the station where the deviation is found — patrol, first article or final. States the lot, the defect and the quantity.

STEP 02Disposition report

Rework, sort, concession or reject — decided with the production lead and, where a customer requirement is affected, with the customer.

STEP 038D report

For repeated or field issues: containment, root cause, permanent corrective action and verification of effectiveness.

Non-conforming product report
不合格品处理报告
8D corrective action report
8D Report — 8D 问题解决报告表
Finished goods outgoing inspection report
成品出货检验报告
06 — Records

What travels with your order

Every lot leaves a paper trail, and each record carries its own number. Ask your sales contact for the set against your batch and production issues the signed copies — we do not claim a report in every carton, we claim records you can audit.

Incoming来料检测报告
First article首件检测记录
Patrol巡检记录 / 异常单
Ageing老化测试记录
Pre-shipment出货检验报告
Outgoing inspection report for diffuser housings
外罩出货检验报告 — diffusers and housings are reported separately from profiles.
Outgoing inspection report for profiles
铝型材出厂检验报告 — one report per lot, signed by inspector and reviewer.
07 — Warranty

Cover by product type

Warranty is set per product family, not as one blanket figure. The table below follows the internal warranty schedule.

ProductCover
Aluminium profiles & finished luminaires3 jaar
Assembled fixtures2 jaar
LED-strip2 jaar
Battery and controller products1 year
Spare parts — claim window6 months from shipment

Claims are reviewed case by case; where a fault traces to a partner process we run the remedy with that plant and remain your single contact.

Internal warranty period schedule by product type
合联电子产品质保时间周期 — the internal schedule this table is taken from.
08 — Certifications

Certificates, with numbers you can check

Our ISO certificates cover research, development and sale of LED lighting for export — they do not certify a manufacturing scope, and we do not present ourselves as a certified factory. What they do show is a management system audited to ISO 9001:2015 and ISO 14001:2015.

ISO 9001:2015

Certificate73025Q05190113R1S
ScopeR&D and sales of LED lighting fixtures (export)
Valid to16 Jun 2028

ISO 14001:2015

Certificate73025E05190046R1S
ScopeR&D and sales of LED lighting fixtures (export)
Valid to16 Jun 2028

UL & design

UL fileUL-US-2433337-0
StandardUL 1598 — LED surface-mounted luminaires
EU design015058118-0001

CE and RoHS apply across the range; UL, DLC, FCC and ENERGY STAR cover selected items. See the certificate scans.

Send us the drawing — and ask for the record

A drawing, a strip width, or the reveal you have to fill. We reply with a section, a lead time and the inspection plan behind it.

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