How to import the 3Dmax already-posted files into unity3D? For beginners, sometimes the textures will be lost after the 3Dmax has been pasted and the color-matched model is imported into unity3D.
Solution:
1. Build the model and texture in 3Dmax.
2. Click in the upper left corner: File-Export-Export
3. Select the save path, the file format is .FBX
4. Check the "embedded media", click OK
5. Ignore the warning, click OK, the save is complete 
6. Open Unity3D, under Assets, right-click – create – new folder – name the folder
7. Put the .FBX file just saved into the newly created folder, and drag all the textures used in this model to this Under the folder
8. At this point, you can find that the model is opened in unity, and the preview already has textures. At this time, you can import and use this model in unity normally.
