JLCPCB - A service provider on the wrong track
Surely one or the other JLCPCB is a term. It is about a quite large Chinese circuit board manufacturer. Until recently, you could upload your own printed circuit boards in Gerber format at a very reasonable price there, and a short time later you received the printed circuit boards by mail.
Since I also work a lot with SMD, I often order the matching stencil with it. All in all, this has always been quite inexpensive.