... / gold, lead-free HASL , Gold finger, immersion Silver, Immersion Tin.Base materials: FR4 ( ShengYi, KB, International), high TG (TG150, TG170), halogen ... aluminum plate (Berquist, Al-made basis), copper (Cu Base), Iron (Fe Base), ceramic substrate (Ceramic Base)The Urgent service24 hours for 2-Layer sample48 hours ...