1.All kinds of PCB 2.High precision,100% ... Cu wight 0.5oz ~ 3.0oz Laminate Materials FR-4,FR-1,,FR-2,CEM-1,CEM-3 Board Cutting Max. number of layers ... size 0.0008” (0.02mm) Aspect ratio 20(5:1) Solder Mask Color green,light green,white,black,dark brown ... V-Cut Depth( residual thickness ) FR-4(1/3+-0.1mm);FR-1,FR-2,CEM-1,CEM-3(1/2+-0.1mm) V-cut angle ... for more details! OSP Single Side Material CEM-1 PCB