HDI PCB1

1.4 layer Meter PCB, FR4 Shengyi Material 1.2mm 
2. Green soldermask, White silkscreen
3. HASL leadfree Finish
4. Mini hole: 0.1mm
5. Mini Width and trace: 3MIL 
6. Prototype and mass production both
7.Buried and Blind holes: Layerstack: