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Automotive lighting manufacturer · OEM & ODM · Wholesale+86 13434569328jack@sunshinyled.com
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Quality control · Dongguan factory

Twelve steps, one standard for every order

We check each stage from raw materials to final shipment, so every order leaves with controlled performance, clear specifications and market-ready packaging.

12Quality steps
4Core tests
2-yearWarranty on bulb series
FullInspection before packing
The process

The twelve steps

Quality is not one test at the end. It is twelve steps, and each one exists because a defect that gets past it costs you more than catching it. Here is what happens to your order.

Shelving racks holding LED bulbs in the TUHO factory
Phase 1 · Materials
  • 01

    Raw material inspection

    Chips, drivers, housings, heat sinks, wires and packaging

  • 02

    Core component pre-processing

Workers assembling LED bulbs at benches in the TUHO factory
Phase 2 · Assembly
  • 03

    Semi-finished product assembly

LED bulbs mounted on powered test racks in the TUHO factory
Phase 3 · Testing
  • 04

    Aging test

    Powered tests for early failures

  • 05

    Extreme temperature test

    On selected products

  • 06

    Lumen test

    Brightness and basic optical performance

  • 07

    Waterproof test

    Sealing for rain, splash and outdoor use

Finished LED bulbs packed in boxes with foam inserts
Phase 4 · Finishing
  • 08

    Final assembly

    Housing, wiring, labels and appearance

  • 09

    Full inspection

    Function, appearance, labeling and specifications

Cartons of TUHO LED bulbs stacked in the factory warehouse
Phase 5 · Packing & delivery
  • 10

    Packaging and warehousing

    By order and SKU

  • 11

    Order delivery

    Carton marking, packing lists and shipment details checked

  • 12

    After-sales support

    Order follow-up and feedback handling

Testing

Tests we run

TestStepWhat it checks
AgingStep 04Early failure under power
TemperatureStep 05Behaviour at high and low temperature
LumenStep 06Brightness output
WaterproofStep 07Sealing
What this means for you

Tests that are not for show

Fewer defective pieces, fewer returns and fewer complaints from your own customers. The tests are not for show: aging finds early failures, the temperature test finds weak designs, and the waterproof test finds poor sealing before the product leaves the factory.

Aging

Finds early failures.

Temperature

Finds weak designs.

Waterproof

Finds poor sealing before the product leaves the factory.

Documents and access

Certifications, warranty and factory visits

Certifications

See the certifications page for the documents we hold and the models they cover.

E-mark ECE R10 approval certificate for TUHO LED headlight bulbs

Warranty

2 years on the headlight bulb series; S-series cup lenses carry 12 months.

2years
headlight bulb series
12months
S-series cup lenses

Visit us

Factory audits are welcome.

Workers assembling LED bulbs at benches in the TUHO factory
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Wholesale & OEM

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TUHO Lighting team meeting with international buyers
TUHO Lighting

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  • OEM & private label
  • 2-year warranty on headlight bulbs
  • Standard items ready in 1–10 working days
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MOQ1 carton per model
SamplesTest before bulk order
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