According to the official developer of the application, EDM Stock System has been migrated to a better product. However, if you still have the software installed, access File > Export or Export option in the menu bar. If there is no menu to access regarding this matter, then it means the software doesn't have support to export to Excel. Additionally use File > Save as and choose a file format supported by Excel. You can check the official Excel website to browse through the file formats. If you still have questions about EDM, try contacting the developer. He should provide all the necessary info about their new product.