How important are Gerber files in PCB manufacturing?

Gerber files are standardized PCB design formats critical for manufacturing. They define layers, dimensions, and components to prevent errors, reduce costs, and ensure efficient production. Latest version: Gerber X2.
What are the causes of poor PCB etching?

PCB etching defects like undercutting, interlayer shorts, over-etching, and resist erosion critically impact yield & reliability. Strict control & maintenance are vital.