Face surface/shading looks wrong in a FBX export from sketchup? I dont have the original file anymore, of this fbx file that time ago get from the sketchup , and now remade some parts but still looks weird the surface.
If I'm not  worng there is an option to fix these problems, but I dont know what is exactly.
A thanks in advance guys if I can count with your help.

this is the blend file:
https://ufile.io/an4cp
Ok, I turn off the Auto Smooth and now everything is normal. THANKS !!