... 2.anti-yellow white ink 3.UL,SGS,ROHS,ISO9001,IPC 4.manufacturer with rich experience Grandwork is professional and reliable PCB ... StrengthAN/mmLb/in1.48Dielectric Constant 1 MHzC-96/35/90/<4.6Below information about our company's process capacity for your ... /buried via holesMain base material:FR-1, FR-2, FR-4, CEM-1, CEM-3, High Frequency Laminate with various dielectric ...