... (Teflon, Rogers, Arlon), halogen free, rigid-flexible board3) Board thickness: 0.21-6.0mm4) Layer counts: 2-16 layers5) Surface finishes ... plating, OSP6) Min. line width/spacing: 4/4mil7) Min. hole size: 0.25mm8) Min. solder mask gap between dam: 4mil9) Max. panel ... size: 20" x 30"10) PCBA design and making basing on ...