I am impressed how PCBgogo are fast, in support as in fabrication!
I sent my design file on Monday 25.04.2019 and I received them on Monday 01.04.2019 (and it's not an april fool ...!).
My design specs :
- 5 pieces
- 150mmm x 150mm
- 4 Layers (70um outer and 50 um inner)
- 6 mils/track min spacing
I'm very happy with the support and the fabrication quality in great !