With Ecdesign 4.7 a new SketchUp model import was released. You can now create your own 3D models using SketchUp or simply download free models from 3D Warehouse. 3D Warehouse contains millions of models.
Make sure you select a Sketchup model.
Learn how to import models, www.ecdesign.se/import
Visit 3D Warehouse, https://3dwarehouse.sketchup.com