... without Plating Bar. 6-Layer PCB,Selected Thick Hard Gold Plating,No Plating Bar,Green Solder Mask,ENIG,Vias Plugged with ... including warp & twist check) Dimensional Inspection (finished hole sizes, pcb profiles, etc) MicrosectionSolderability Test (245±5ºC; 3-5 sec ... Test Ionic Contamination Test-------------------------------------------------------------------------------- 6-Layer Hard Gold PCB