Mixed material circuit baord

4-layer Multilayer Board, Base Material: FR4 TG150 + Rogers 4003. copper thickneess 1oz inner layer and 2oz finished outer layer. surface treatment Immersion Gold 4U".  With green soldermask. Finished board thickness 1.6mm. Min.line width/Min.line spacing 0.18/0.18mm. E-test: 100%. 

Multilayer Board is one of the most products we produce. Our Multilayer Board can be treated from the 3-40 layer. and we can do the surface treatment can be ENIG, HASL, LF-HASL, Immersion Tin,Immersion silver,Flash gold(Gold plating), OSP and etc.