Material quality determines PCBA lifespan. All materials undergo strict inspection before use; defective parts are rejected at source.

Optical inspection for SMT soldering defects: reversed, offset, wrong part, missing part, tombstoning, cold solder, etc., to ensure soldering quality.

Verify materials at each station against BOM to ensure material, program and BOM consistency.

Measure and inspect each component of first article against BOM and PCB data to ensure placement meets customer requirements and prevent defects flowing to next process.

Patrol all production processes per product requirements and work instructions to ensure procedures and methods comply.

Sampling inspection per GB2828, AQL=0.65, to ensure outgoing products meet customer requirements.