Quick Details Place of Origin: Liaoning, China (Mainland) Brand Name: GESP Model Number: 2 Layer Pcb Base Material: FR-4 Copper Thickness: 0.25 Oz -12 Oz Board Thickness: 1.6mm-3.2mm 0.2mm-4.5mm Min. Hole Size: 0.15mm Min. Line Width: 5mil Min. Line Spacing: 4 mil Surface Finishing: HASL/enig/OSP/immersion silver /gold finger Base Material:: FR-4,CEM-3, Roger,teflon , taconic,arlon , Metal/ceramic/aluminum base Copper Thickness:: 0.25 oz -12 oz Board Thickness:: 0.005 Certificate:: ISO/UL/RoHS/TS16949 Gold thickness:: 0.05UM V-cut Scoring:: YES Standards:: IPC Class 2, Class 3 Max. Panel Size:: 22 Impedance Control: yes Surface Finishing:: HASL Lead Free/OSP/Soft Gold/Hard Gold