This document contains tags and metadata for various printed circuit board (PCB) manufacturing topics including direct plating quality inspection, double-sided HASL finished boards, multilayer PCBs, surface coatings, standards, materials, processes, technologies, and trends. Key areas covered include plating, etching, coating, assembly, standards, materials constituents, and flexible circuit manufacturing trends. The tags provide related terms for searching various PCB types, components, manufacturing services, and technologies.