Drag the required map to the document you created, usually 3 10*3 10PX or 800*800PX. Press the shortcut key ctrl+A to select all, you will see a selection, and then edit-strokes, and a stroke dialog box will appear. Select the desired thickness and color, and then click OK.

If you can't promote the framework, you can go directly to the internet to find relevant information. There are many such e-commerce materials now. Download psd file, add your own product drawing through ps, and modify the copy to use.