Export
1. Go to your part of site which you would like export
2. Select "Export" from the dropdown menu in the upper right. After sellecting "export" you will get a message.
3. Choose "save"-option.
4. Select a location.
5. Click Save.
Import
1. Go to the site in wich would you like to import the web parts.
2. In the Web Part zone that you want to add the Web Part to.
3. Click Add a Web Part.
4. Click Advanced Web Part gallery and options to display the tool pane.
At the top of the tool pane, click the arrow, and then click Import.
5. Click Browse.
6. Locate the Web Part file that you want to import, and then click Open.
7. Click Upload.
8. Select the Web Part zone.
9. Click Add.