... 2)Surface Finish: immersion gold 3)certificate:UL,ROHS,REACH multilayer pcb for net-minitor main borad2) Copper thickness: 1 oz ... 6.0mmCAMBERD≤0.75% (DOUBLE SIDE)D≤0.7%(MULTILAYER)IMPENDENCE TOLERANCE±7%PIH TOLERANCED>5.0 ±0.076mm0.3 ... /IMMERSION GOLD, OSPSOLDER MASK COLORGREEN, BLUE, BLACK, WHITE,REDTECHNNOLOGYBLOCK,BGA,PEELABLE,CARBON INKASSEMBLYLEAD FREE,NOT LEAD FREELEGEND COLORWHITE, BLACK, YELLOW ...