I’ve used Yun Industrial / ACME PCB for four PCBs, all of which had 18 layers and over 1,400 components ranging from 676-pin BGAs to bypass capacitors in 0201 (impossible to find if you drop them) packages. Troubleshooting these boards to correct assembly problems would have been a complete nightmare. Fortunately, that wasn’t necessary. Yun Industrial did an excellent job on all four boards. I highly recommend them, especially to anyone using components in state-of-the-art packages.
