FR4 100x70mm Single Side Copper Clad Laminate PCB Board Fiberboard CCLSpecification:Panel Size: Approx. 100mm X 70mm or 3.94" X 2.75" (inch)Thickness: 0.06" ±0.005 (1.5mm ± 0.15)Weight: Approx. 23g eachLayers: Single SidePanel: FR4Operating temperature: Up to 140  C or 285 FDescription:This Single PCB Copper Clad Laminate Board is made of copper foil by the hot-pressing technology.Super-fine steel-wool、 Restore4、 Tarn-X、 roscherite、 Zap or similar before using.After that be sure to rinse and dry so without any water spots.Combined resin with reinforced material.As basic material of PCB production.Package included:1 x Single Side Copper Clad Laminate