All materials related to the product are described in the Node Editor (Shader Editor in 2.8). There is also the showcase scene included to learn from.

Otherwise to import the material into your scene simply use the File -> Append functionality. (Shift+F1)

This scene (and materials) are also part of materialiq, a material library for Blender that we develop which you can check out here: https://blendermarket.com/products/materialiq