This time let’s to know the PCB substrate CCL. CCL also known as the PCB substrate. The reinforcement material impregnated with resin, one or both sides covered with copper, made by hot pressing into a  plate material, as copper clad laminates.

It is to do the basic PCB material, often called the substrate CCL. When it is used for multilayer circuit board production, also called core board (CORE).

FR-4 —- Flame Resistant Laminates,our material is now commonly used FR-4, also the most popular used for substrate.