Two types of hangers and two connection methods:
1. Adhesive - The back of this component is equipped with a groove, which makes it easier to achieve better contact with the glue
2. Screw fixation - This part has two holes, which can be used for 3mm self-tapping screws

I used "Mamut" glue to bond them together

I suggest using a three-layer wall, with 20% honeycomb filling, and adopting PETG or a stronger material.