This article was created to show how to copy products to a different library:
Open the library folder with the product you want to copy and the folder of the library you're adding it to.
Copy the .moz file and its corresponding .skp file (if applicable) for the product you want to move to the new library.
Open Mozaik and open the library you want to move the product to. (Libraries - Products)
Right click on the category you want to add the product to, click Add, and give it the same name as the .moz file
Once you do that the software will connect the name of the product to the file and Sketchup model you added to the products folder.
You'll do this for each product that you want to move.