... anti-yellow white ink 3.UL,SGS,ROHS,ISO9001,IPC 4.manufacturer with rich experience Grandwork is professional and ... multi-layer board, high density board, including MLB with blind/buried via holesMain base material:FR-1, FR ... FR-4, CEM-1, CEM-3, High Frequency Laminate with various dielectric constant (imported or from local supplier), Aluminum ... looking forward to your inquiry! 94v0 pcb board with rohs