... Surface finish: HASL CE, UL, ROHS approved Specifications:1) Double layer PCB, 1.6MM2) Strict quality control3) Prompt delivery. ... available.ServiceQuotation in 2 hoursQuick and economic delivery termFR4 Double-sided and Alum single-sided sample in 24 hours4 ... thick gold platingBase material: FR4 (Shengyi, KB, Intl.); High TG (TG150, TG170), Halogen free, Alum. ( ) Cu, Iron, ceramic base Double sided ...