There are PCB fabricators that make the blank boards, plated with holes.
Then there are PCBA factories that will contract PCB fabricators. PCB fabricator will deliver blank PCB to them and then order your parts according to your BOM. Later, the PCBA factory will install components per your assembly drawings. Finally, they will perform any testing according to your test instructions. Then deliver the turnkey assembly to you.
The easiest and probably best way is to turn the whole thing over one factory which offers both PCB manufacturing and PCBA service.
Read More: Moko Offer One-Stop Service
#PCB Manufacturing #PCB Assembly