... Material, Immersion Tin, Impedance Controlled, Vias Plugged with Solder Mask, RoHS Compliance. 12-Layer PCB,Taconic Material,2.0mm ... Thickness,Immersion Tin,Impedance Controlled,Vias Plugged with Solder Mask,RoHS Compliance. CertificatesULISO9001TS16949ISO14001--------------------------------------------------------------------------------Testing Items100% Electrical Test 100% Visual ...