Copper Clad Board (CCB), abbreviated to CCL, is a type of base material of PCBs. With glass fiber or wood pulp paper as reinforcing material, a copper clad board is a type of product through lamination with copper clad on either one side or both sides of reinforcing material after being soaked in resin.

It is an abbreviation for Copper Clad Laminate. An insulating plate obtained by stacking a sheet (prepreg) impregnated with resin on a base material such as paper or glass, and applying heat treatment under pressure is called a laminated plate.