●如●何●识●别白纸发票和无效发票朱世芳发票是财务收支的法定凭证，认真管好发票是控制税源、防止偷欠税款和揭露违反财经纪律行为的有效措施。因此如何识别白纸发票和无效发票，具有重要意义。下面介绍一下识别法：１、白纸发票。所谓白纸发票是指未经税务部门套印发... ● ● ● ● ● ● ● do not know the white paper invoices and invalid invoices Zhu Shifang invoices are the legal vouchers for financial revenues and expenditures, careful management of invoices is to control the tax sources, to prevent tax fraud and expose violations of financial discipline and effective measures. Therefore, how to identify white invoice and invalid invoice, is of great significance. The following describes the identification method: 1, white invoice. The so-called white paper invoices refer to without the tax department set ...