I have a couple of large Solidworks files of which I want professional renderings. I have approached an animation company to create these renderings. However, they do not succeed in importing these files. I make use of Solidworks 2014, they use 3D Max 2014 version. We have tried solidworks assembly file format, IGES, STEP, OBJ. What is the best way to import these files into 3D max?