1. FR4 material,1oz copper, 2. Line Width/Line Spacing:0.1mm/0.1mm 3. Blue ... mask 4. with competitive pricing 1. FR4 material,1oz copper, 2. Line Width/Line Spacing:0.1mm/0.1mm3. Blue Ink ... , 48 hours for 4L pcb, 72 hours for 6L and 8L pcb, 120 hours for 10L or more high pcb at ...