![FR-4 Hard gold PCB](http://www.knpcba.com/uploads/FR-4-Hard-gold-PCB.jpg)
FR-4 Hard gold PCB
Two layer board, board thickness: 1.6mm;
Finished Copper Thickness: 35um,
Finish: ENIG
![gold plating PCB with CEM-3 material](http://www.knpcba.com/uploads/gold-plating-PCB-with-CEM-3-material.jpg)
Gold Plating PCB with CEM-3 Material
One layer board, board thickness: 1.2mm;
Finished Copper Thickness: 35um,
Finish: ENIG
FR-4 Hard gold PCB
Two layer board, board thickness: 1.6mm;
Finished Copper Thickness: 35um,
Finish: ENIG
Gold Plating PCB with CEM-3 Material
One layer board, board thickness: 1.2mm;
Finished Copper Thickness: 35um,
Finish: ENIG