Ask the other party to issue a certificate to prove that the invoice should be lost by courier, or for some reason, there is no witness, and then stamp the official seal of your unit. You can go to the IRS with this certificate and a copy of the invoice. If the invoice is lost, you will be fined, and the fine of 200 will be deducted from the company account. When this decision is completed, then you can use the penalty decision and the certificate issued by the other party. When you go to the national tax hall, you can open a tax return certificate for the special VAT invoice, and bring the official seal when you go to do it, otherwise you will come for nothing. When issuing the certificate, Huang Lian will take two copies from the IRS, keep one for himself, and send one copy to the other unit. A copy of the invoice will be stamped with the special invoice seal and sent to the other unit. The other party can use this list to go to the national tax collector's card for tax deduction.