What should I do if the electronic invoice of China Petrochemical is accidentally deleted when I open it on my mobile phone through 139 mailbox?

You can ask China Petrochemical to retrieve the records and send you a new one. The electronic invoice has been accidentally deleted, so it is not necessary to reissue or reissue it. Just reprint it. Electronic invoices exist in the form of data on the Internet, usually as PDF files, which you can print out. If the other party doesn't have it, you can reissue the electronic invoice. Electronic invoice is the product of the information age. Like ordinary invoices, they are uniformly issued by the tax bureau.