... , components purchasing, * PCB assembly, test, packing and PCB delivery Technical Specification For PCB : Number of Layer1,2,4 or 6,upto 18 ... '' or 0.15mmMax Board Dimensions20 inch*20inch or 500mm*500mmMin Trace/Gap0.10mm, or 4milsMin Drill Hole Diameter0.01'',0.25mm ... Rohs standard.In the meantime,we are able toprovide certificate for each kind of material,or UL certificate upon customers' requirement ...