Dear, I am glad to answer your question: How to download the electronic invoice of Aerospace Information 5 1? A: The download method of Aerospace Information 5 1 invoice is as follows: 1. Click "Manual Upload of VAT Electronic Ordinary Invoice", select the invoice, click "Customer Information", enter the email address or mobile phone number of the other party and resend; 2. Click "Invoicing Inquiry", select the invoice, click to view the original ticket, click PDF, download the PDF file, and send it by email or * *; Do it. Electronic invoice is the product of the information age. Like ordinary invoices, they are distributed to merchants in the form of unified issuance by the tax bureau. The invoice number is distributed to merchants with national unified coding and unified anti-counterfeiting technology. The signature mechanism of the electronic tax bureau is attached to the electronic invoice.