... (0.3mm), Blue Solder Mask, ENIG, RoHS. 2-Layer PCB,Thin Thickness (0.3mm),Blue Solder Mask,ENIG,RoHS. CertificatesULISO9001TS16949ISO14001--------------------------------------------------------------------------------Testing ... (conductor peel strength) Impedance Test Ionic Contamination Test-------------------------------------------------------------------------------- 2-Layer Thin Thickness PCB