1. Invoice signature means that the invoice recorded in the account is signed by the handler, payee, and leader (legal person).

2. The invoice signature can be signed on the front or the back. There is no fixed format. If it is for the sake of standardization, it is best to engrave a long seal and engrave: handler, reviewer, leader, leaving space for signatures to the right of these names. When reimbursing, stamp the back of the invoice and ask them to sign separately.