... FR4,Halogen Free material,CEM-3, Rogers HF material, etc. Layer counts: 2-36 layers Finished Copper Thickness: 0.5-5 ... Finished Board Thickness: 0.2-6.0mm Min. Line/Track Width: 4mil Min. Line/Track Space: 4mil Min. Contour Tolerance: +/-0.1mm ... .Keep all costs to minimum and maximize our customers' benefits. multi-layer PCB manufacturing