The first board off the line tells you more than any other. A successful first article means your design, your fabrication data, and your assembly instructions have all aligned correctly. A problem caught at first article is a problem fixed at mini...
https://www.best-turnkey-pcb-assembly.com/turnkey-pcb-prototyping/turnkey-pcb-prototyping-best-practices-for-first-article-inspection/
When you outsource PCB manufacturing to a turnkey provider, you are trusting them to source and use materials that meet your specifications. The base laminate, copper foil, solder mask, and surface finish all directly impact the performance, reliab...
https://www.best-turnkey-pcb-assembly.com/low-volume-turnkey-pcba/how-to-verify-material-quality-in-turnkey-pcb-manufacturing/