Layer:1-50/material:FR4,PTFE,Rogers/Board thickness:0.2-10mm/min hole diameter 0.15mm/Min line wideth&space2&2mil/Aspect ratio:32:1/size:50X50mm--609X1200mm/copper thinckness:HOZ-10OZ/surfce finishing: ENIG,I-S,I-Tin,Panel Gold plating,Hard gold plating,Soft gold,HASL,Lead free HASL,OSP,ENPIG/others:back drill,special technology