Number of layers: 4;
Board thickness: 1.6mm;
Substrate material: FR4;
Surface treatment: Immersion gold
Number of layers: 2;
Board thickness: 1.6mm;
Substrate material: FR4;
Surface treatment: Anti-oxidation
Number of layers: 2L;
Board thickness: 0.6mm;
Substrate material: FR4;
Surface treatment: Immersion gold