May I know if your production department complained the PCBs have these problems again ?

1. Circuits short or open
2. Drill holes oversize or undersize
3. Solder mask blister
4. Pad expose  Cu or damage
......

If so, here a better PCB supplier for you now!
We Nature Precision Electronics LTD can just help you solve all the problems above.

If any interested, more PCBs as well as price, sample will be sent for your reference.

Thanks & B.R

Jasen