# About the Product Structure (Tree)

> What the Product Structure tree is and how it works in Asset Transformer Studio

![Product Structure](/api/media?file=/asset-transformer-studio/2026.5.0/media/NewItem280.png)

Like many other CAD solutions, the *product structure* in Asset Transformer Studio designates the *scene tree* (or scene hierarchy), which provides a structured view of the occurrences of the scene.

When a CAD/3D model is imported in Asset Transformer Studio, the Product Structure reflects its hierarchy as it was designed in the CAD/3D solution that produced it.

Then, this hierarchy can be modified to fit the user's need, interactively or through Python scripting.

Finally, when a scene is exported (see [Supported File Formats](../supported-file-formats)), the Product Structure is kept as displayed in the **Product Structure** panel (if the format supports the *tree* concept).

> **Note:**
>
> In this documentation, and in Asset Transformer Studio functions, the Product Structure is often called *tree*.

## Related topics

* [About Occurrences](./about-occurrences.md)