... )Excellent eletrical isulation & punching property 4)UL,ISO Specification of Copper clad laminateCCL is widely used for the rigid PCBCopper thinkness : 18 ... 94HB SheetsThickness(mm)Copper foil(um)Size(mm)1.618/0,25/0,35/01030x12301.518/0,25/0,35/01030x12301.418/0,25/0,35/01030x12301 ... ”1.218/0,18/18,35/0,35/3541x49”0.818/0,18/18,35/0,35/3541x49”0.618/0,18/18,35/0,35/3541x49” copper clad laminate