... , TG170, 0.062", LF-HASL, RoHS. 8L PCB with Impedance Controlled,FR4, TG170, 0.062",LF-HASL, RoHS. CertificatesULISO9001TS16949ISO14001--------------------------------------------------------------------------------Testing Items100 ... ) Impedance Test Ionic Contamination Test-------------------------------------------------------------------------------- Multi-layer PCB with Impedance Controlled