... FR4 Board thickness:04mm Copper thickness:1oz Finish: Immersion gold AdvantagesCompetitive price with best quality: USD 25~250/sqmFast respond and short ... lead time: 3-10 workdaysCertificated with UL, IPC, ROHS, SGS and ISO9001Free sample for the ... 2, FR-4, CEM-1, CEM-3, High Frequency Laminate with various dielectric constant (εr) (imported or from local supplier), ...