... . 2.0W aluminum base material 2.anti-yellow white ink 3.UL,SGS,ROHS,ISO9001,IPC 4.manufacturer with rich experience Grandwork ... multi-layer board, high density board, including MLB with blind/buried via holesMain base material:FR-1, FR-2, FR-4, ... CEM-3, High Frequency Laminate with various dielectric constant (imported or from local supplier), Aluminum base laminate, Metal core AluminumSurface Finish: ...