Layer:8 Min.Hole copper:25um Surface copper:35-55um Thicknes:1.6mm Surface Treatment:immersion Ag Sterling silver PCB Layer:8Min.Hole copper:25umSurface copper:35-55umThicknes:1.6mmSurface Treatment:immersion AgOur Production Capability for PCB· Layer: 1 to 28 layers· Material type: FR-4, CEM-1, CEM-3, High TG, FR4 Halogen Free, Rogers· Board thickness: 0.21mm to 7.0mm· Copper thickness: 0.5 OZ ...