Problem export from Rhino to Sketchup

Hello everyone. I am working on Rhino6 to make a model with different slopes… Then I want to export it on Sketchup - but it is creating me all this kind of strange geomerty in the different block I made on Rhino. Is there a way to avoid these kind of problems ? Thank you !

Are you working to a very small scale? The missing faces could be a result of that
In Rhino I find it safest to convert my polysurfaces to meshes before exporting to SketchUp. I usually also use the ReduceMesh command before export because to my taste, the default Rhino exports contain far too many polygons.

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Thank you I’ll try to change the unit because yes I was drawing in Millimeters and meshing the srufaces thank you !