ENEPIG for RO4350B with blind vias from L1-L2,L3-L4

This is a high speed testing PCB ,designed by University --high-Speed and Mm-wave IC (CoSMIC) Lab.

RF PCB/high frequency ,material RO4350B.

Stackup :RO4350B 6.6mil+PP+RO4350B 6.6mil

Surface:ENEPIG ---Electroless Nickel Electroless Palladium Immersion Gold

Blind vias:L1-L2.L3-L4

Min trace/space : 4/4mil

See the product link here. https://www.stormpcb.com/productinfo/888592.html