Install the kitchen splashback before or after the kitchen construction?

Most of our clients do it before, as we see from the pictures. Of course, it has to be marked exactly.

We would recommend doing it "in-between":
So
- first build the kitchen, possibly only the base cabinets
- DO NOT assemble any fittings as they will hinder the bonding process - Then mount our kitchen splashback
- Fit Corner Profiles
- assemble fittings
- now mount the wall cabinets