... Mark1.UL,SGS,ROHS,IS09001,CE,IPC multilayer pcb with BGA 1.Base Material:fr42.copper thickness:2oz3.board ... (0.1mm)Solder Mask Thickness0.0007" (0.018mm)Hole size0.01" (0.25mm)-- 0.257" (6.5mm ... )Hole Size Tol (+/-)± 0.003" (± 0.0762mm)Aspect Ratio6: ... SGS ULsample picture product authenticationcompany profile 8 Layers PCB with 4/4mil Minimum Line Width/Spacing, BGA, 1.6mm ...