1. Your company keeps accounts according to normal purchases, that is, the input tax cannot be deducted, so your company will pay more taxes accordingly;

2. Your company pays the supplier according to the tax issued by the other party. In this case, do you sign for the tax bill given by the other party? If you don't sign for it, you don't need to keep an account, that is, the goods you buy don't need to keep an account first, and the other party will naturally contact you. If you have signed for it, you can also ask the other party to provide you with a copy of the tax receipt issued by the other party. If it is really lost, you can issue a certificate of the lost invoice and affix the official seal to the other party, so that the other party can issue a tax copy certificate of the lost special VAT invoice to the local tax authorities. Then, you can authenticate and deduct tax according to the other party's certificate and the copy of the invoice stamped with the special seal of the other party's invoice (that is, the bookkeeping book of the lost invoice). This operation is the most perfect.