Win7 system can not open the suffix named caj file how to do?

How to open the caj file in Win7 system:

1. Open the PDF reader directly, click on the file → open, find CAJViewer, find the folder where the target CAJ file is located, and select the drop-down menu in the lower right corner. “All files";

2, you can see the CAJ file you want to view at this time, select, click to open to view the CAJ file;

3, open the target CAJ file where Folder, click the CAJ file you want to view;

4. Change the suffix of the file to “.CAJ” to “.PDF”;

5. Click again, this When the dialog box pops up, click OK;

6. The CAJ file becomes a PDF file;

7. Open the PDF file reader normally.