Invoice rolls, also known as rolled invoices, are invoices that are divided according to the roll method. Rolled invoices are divided into two types: fixed-length and non-fixed-length. Fixed-length invoice specifications for: width of 57mm, 76mm, 82mm three; length of 127mm, 152mm, 177mm three. That is, the combination of nine specifications for specific specifications, by the provinces, autonomous regions, municipalities and municipalities directly under the Central Government and the planning of the Tax Bureau (hereinafter referred to as the provincial tax bureaus) according to the actual needs of the above specifications in the selected. Indeterminate length invoice specifications: width of 57mm, 76mm, 82mm three; length according to the print content of how much to determine.