About Us
O-Leading's Manufacturing And Engineering Commitment
O-Leading is known for high-reliability PCB and PCBA manufacturing, but we are about more than just circuit boards. We serve mission-critical industries — aerospace, industrial control, and telecommunications — where a single failed board can mean a failed mission. That's why over 30% of our team are engineers, and every project starts with a free DFM review, not just a price quote.
Our quality program is rooted in engineering-first manufacturing and total quality management, from DFM audit to final FQA. This foundation, along with a dedicated team, promotes the following:
Striving for zero defects in every batch.
Quality integrated from DFM audit to final FQA.
Simple, reliable designs are the best solutions.
Seamless scale-up from prototype to volume, delivered worldwide.

Precision Boards, Up to 44 Layers
From 44-layer rigid boards to HDI Any-layer and specialty materials — rapid prototyping to volume production with full traceability on every panel.

Turnkey Assembly, 01005 to System
Turnkey assembly from 01005 micro-components to 0.3mm BGA and full system box-build, with 3D AOI & X-Ray verification on every board.
- 01005Micro-component placement — 0.4 × 0.2mm on the smallest parts
- 100%3D AOI coverage + X-Ray inspection for hidden joints
- 0.3mmFine-pitch BGA / µBGA assembly with void control

Secure Supply
From Authorized Channels
Global procurement from authorized channels with IQC inspection and batch traceability — secure supply for every project, from prototype to mass production.



