query method and explanation of authenticity of Qingdao local tax invoice

1. SMS query: users of China Mobile and China Unicom can edit the SMS content: f (both uppercase and lowercase)+12-digit invoice code and 8-digit invoice number, and send it to 116353212366, and the query result will be sent back to the mobile phone immediately. (For example: Qingdao special invoice for parking (parking) charges, invoice code: 237121671113, invoice number: 12586518, users can edit the short message "f23712167111312586518" and send it to 116353212366, and the query result will be sent back to the mobile phone immediately) 2. Telephone inquiry.