Base Material: FR-4, CEM-3 Copper Thickness: 18um-105um Board Thickness: 0.2-3.2mm Min. Hole Size: 0.2mm ... Base Material: FR-4, CEM-3 Copper Thickness: 18um-105um Board Thickness: 0.2-3.2mm Min. Hole Size: 0.2mm ... management: ISO9001:2008-Markets: Europe, America, Asia lead free printed circuit board fabrication