How to query and print electronic invoices?

According to the information you provided, if you are a user of Shanghai Unicom, you can download the electronic invoice from the e-mail box reserved at that time, and then print it yourself or in the physical business hall of Shanghai Unicom for nearly 6 months (you can also print it on the spot when you handle business in the physical business hall). Online business hall and Unicom APP self-service inquiry and electronic invoice issuance are not supported for the time being. For details, please contact the local Unicom manual customer service consultation. The actual situation is subject to local policies.