... material2. 6L 1oz copper, Board Thickness 1.6mm3. Competitive price with good quality4. optical pickup head FPC board5. Certificate: ROHS, UL, ... 4LBoard thickness: 0.1mm to 0.25mmFinished Copper thickness: 1/3 OZ to 2OZ items technical index base material Polyimide ... line width / space0.05mm(2mil)External treatmentrouting, punching, laser appearance 6 Layer FR4 and PI optical pickup head fpc board