As stated in the original document, it is not suitable for 3D printing.

The problems I encountered when using the original file to print on my light-curing printer:
The wings/guides of the rocket are too thin and are prone to breaking when touched.
The wheels on the shopping cart broke due to being hollow.
I can't print it out in the size I want completely. There are already some separated parts, but they are flat, so it will be more difficult to align the parts or make them centered.

I made some modifications to the model:
The thickness of the rocket's wings/guide rails has increased by approximately 0.5 millimeters.
The wheels of the shopping cart are now solid. However, they cannot spin or rotate.
The shopping cart support for B28 is now centered on both sides.
I wasn't able to print it out in the size I wanted, so I made some extrusions/holes for the main part and the base of the composite rocket.

It is mainly suitable for resin printing, but I have also included an FDM .3mf file.