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Quality & Manufacturing

Quality System for Commercial Vehicle Electronics

IATF 16949 manufacturing, environmental validation, EMC pre-compliance and IP65 / IP67 enclosure design — built into every OEM project from prototype to shipment.

IATF 16949 EMC pre-compliance IP65 / IP67 PPAP to your submission level

OEM buyers in commercial-vehicle and construction-machinery programs qualify suppliers on the manufacturing system, test lab, documentation and batch discipline, not data-sheet promises.

Certified

IATF 16949 Manufacturing

IATF 16949 manufacturing with APQP, PPAP, FMEA, MSA and SPC documentation for OEM sourcing and programme handover. Read more

Validated

In-house environmental lab + EMC pre-compliance

Temperature, humidity, salt-spray, dust, vibration, ESD and surge screening in-house; formal EMC compliance at accredited third-party labs. Read more

Approved

IP65 / IP67 Protection

Sealed enclosure design, gasket selection and connector pathways validated to IP65 / IP67 for dust, water and harsh vehicle environments. Read more

Qualifying a supplier? The OEM sourcing guide covers certificate verification, PPAP level against your drawing revision and change notification — or verify certificates on file.

Manufacturing footprint

What sits behind every shipment

3
SMT
Automated surface-mount lines
1
THT
Auto-flow through-hole line
4
Assembly
Standard assembly stations
Since
2009
Automotive electronics
Commercial vehicles & construction machinery

Communication protocol stack

CAN 2.0 / CAN-FD / LIN / SAE J1939 / ISO 14229 UDS / ISO 15765 across BCM, VCU, PMU and switch-panel platforms. Compatibility tested against current OEM gateway / domain controller architectures.

Region-specific approvals

UNECE type approval / e-Mark, SASO/SABER, FCC equipment authorisation and any applicable DOT/FMVSS self-certification are available upon project requirement, not as catalogue certificates. See the OEM sourcing guide.

Inside the manufacturing site

Lines, chambers and test rigs

Manufacturing and quality control · Changsha, Hunan Component placement, board transfer, in-line optical inspection and final quality checks on the lines that build our commercial-vehicle electronics.
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Read the transcript

We operate SMT and THT production lines. In-line inspection and other advanced equipment support annual capacity of 1.5 million sets. Our quality processes follow ISO 9001 and IATF 16949 quality-management requirements. Driven by original ideas, well-equipped production lines, trained employees and a disciplined quality-control system, every product passes through controlled quality checks before it leaves the factory.

The narration names ISO 9001 as well as IATF 16949. For this scope, IATF 16949 already includes ISO 9001. Verify certificates.

Stations on one SMT line

Three SMT lines, one THT auto-flow line, four assembly lines.

One SMT line with four stations: solder-paste print, JUKI RS-2 placement, multi-zone reflow and AOI. A count chip marks three parallel SMT lines.
  1. PRINT T3 PLUS Solder paste
  2. PLACE JUKI RS-2 Component placement
  3. REFLOW Multi-zone oven Solder reflow
  4. INSPECT SINIC-TEK AOI

SMT workflow on the factory floor

Paste inspection, placement, reflow, line exit and optical inspection. Click to enlarge.

SINIC-TEK SPI solder-paste inspection station and JUKI RX-7R placement machine on Youlai's Changsha SMT floor
Solder-paste inspection — SPI SINIC-TEK station, JUKI RX-7R alongside.
JUKI RS-2 surface-mount placement machine with component feeders and operator on Youlai's Changsha SMT floor
SMT placement — JUKI RS-2 Component feeders at the operator side.
ETA reflow soldering oven on Youlai's Changsha SMT floor
Reflow — ETA Multi-zone reflow oven.
SMT line exit with operator and printed circuit board handling on Youlai's Changsha factory floor
Line exit Boards leaving the line.
SINIC-TEK inline optical inspection workstation showing printed circuit board review screens at Youlai's Changsha factory
Inline optical inspection Review screens at the SINIC-TEK station.

SMT & assembly equipment

SMT stations and the THT auto-flow line.

T3 PLUS solder paste printer on Youlai's SMT line
Solder paste printer T3 PLUS in-line solder paste deposition.
Wave soldering oven on Youlai's THT line
Wave soldering Through-hole wave soldering for THT components.
Reflow soldering oven on Youlai's SMT line
Reflow oven Multi-zone profile-controlled reflow.
AOI optical inspection station after reflow
AOI inspection Automated optical inspection after reflow.
ZX-800 automatic assembly machine with safety enclosure
Automatic assembly cell ZX-800 enclosed-chamber assembly cell.
Automatic fuse and relay insertion machine for power distribution boxes
Fuse / relay inserter Automatic loading of fuses and relays for PDBs.
In-circuit test (ICT) station for end-of-line functional verification
ICT in-circuit tester End-of-line in-circuit functional testing.

Environmental lab

Climate, thermal shock, water-spray, salt-spray and aging in this set, plus 2D dimensional inspection. Dust, vibration and mechanical shock are on the environmental + EMC page.

Programmable temperature and humidity test chamber
Temp + humidity chamber Programmable temperature and humidity profiling.
Water-spray chamber for IP-rating verification
Water-spray chamber IPX-rated water-ingress testing.
Two-zone thermal-shock test chamber
Thermal-shock chamber Hot-cold thermal-shock cycling.
Temperature and humidity cycling chamber
Climate cycling chamber Long-form humidity and temperature cycling.
High-temperature aging chamber for burn-in testing
Aging chamber Sustained burn-in at elevated temperature.
Salt-spray (NSS) corrosion test chamber per ISO 9227
Salt-spray chamber Accelerated corrosion testing per ISO 9227.
2D optical profile projector for dimensional inspection of mechanical parts
Profile projector 2D dimensional inspection of mechanical parts.

Electronic & EMC test rigs

In-house pre-compliance. Formal EMC certification, when a programme requires it, is at accredited third-party laboratories — methodology.

Bench-top hipot dielectric withstand tester
Hipot tester Dielectric withstand and insulation resistance.
Electrostatic discharge (ESD) generator for IEC 61000-4-2 testing
ESD generator ESD immunity per IEC 61000-4-2.
ISO 7637 automotive transient pulse simulator
ISO 7637 simulator Automotive supply-line transient immunity.
Hardware-in-the-loop simulation rig with monitor and oscilloscope
HIL simulation rig Hardware-in-the-loop vehicle network simulation.
Lightning surge generator used for EMC immunity tests
Surge generator Lightning surge immunity verification.
Certificates on file

Verify our certifications

Verify numbers and status with the issuing body before approval.

Confirm date, expiry and scope on received PDFs. cnca.gov.cn · OEM sourcing guide

Request current certificates

IATF 16949:2016 Certificate of Registration — Changsha Youlai Electronic Technology Co., Ltd.
IATF 16949:2016NQA T195990 · USI 6PE2KEvalid through 12 Aug 2027
ISO 14001:2015 environmental management system certificate
ISO 14001:2015Environmental management · Environmental · NOA1992545valid through 12 Jun 2028
ISO 45001:2018 occupational health and safety management system certificate
ISO 45001:2018Occupational health & safety · Health & safety · NOA2099306valid through 2 Jan 2029
High-Tech Enterprise certificate issued by Hunan Province
High-Tech EnterpriseHunan Province · Hunan · GR202343004946valid through 8 Dec 2026
In-house R&D

Eight software works registered in our own name

Firmware for our switch, power-distribution and instrument platforms is written by our own engineering team. The eight shown here are registered on China’s national software copyright register: central-console switch control, fireproof and smart power-distribution-box monitoring and control, TPMS receiver and transmitter, CAN-bus test and control, and CAN-bus cluster simulation and display. A registration is a copyright record rather than a patent. Further works are registered as firmware reaches a release-stable state; the current list and full PDFs go out during supplier qualification.

Computer Software Copyright Registration Certificate — Youlai central console switch control system software V1.0
Computer Software Copyright Registration Certificate — Youlai fireproof power distribution box monitoring system software V1.0
Computer Software Copyright Registration Certificate — Youlai smart TPMS receiver control system software V1.0
Computer Software Copyright Registration Certificate — Youlai CAN-bus test and control software V1.0
Computer Software Copyright Registration Certificate — Youlai smart power distribution box control system software V1.0
Computer Software Copyright Registration Certificate — Youlai CAN-bus instrument cluster simulator control software V1.0
Computer Software Copyright Registration Certificate — Youlai CAN-bus instrument display software V1.0
Computer Software Copyright Registration Certificate — Youlai smart TPMS transmitter control system software V1.0
Get in Touch

Talk to Our OEM Project Team

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When reaching out, please share with us: target vehicle / machine model, expected annual volume, and key technical requirements (CAN protocol, IP rating, working temperature, connector preference). Drawings welcome.