2-Layer PCB with Gold Finger, Blue Solder Mask, Vias Plugged with Solder Mask, RoHS Compliance. 2-Layer PCB,Gold Finger,Blue Solder Mask,Vias ... Plugged with Solder Mask,RoHS Compliance. CertificatesULISO9001TS16949ISO14001--------------------------------------------------------------------------------Testing Items100% Electrical ...