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Today, let's look at the export and render in SolidWorks Visualize 2017.

Mechanically supports and electrically connects electronic components or electrical components using conductive tracks, pads and other features etched from one or more sheet layers of copper laminated onto and/or between sheet layers of a non-conductive substrate.

Components are generally soldered onto the PCB to both electrically connect and mechanically fasten them to it.