Legal basis: Notice of State Taxation Administration of The People's Republic of China City, People's Republic of China (PRC) on Issues Related to Issuing Special Invoices for Red-ink Value-added Tax with Taxpayers' Discount. After the taxpayer sells the goods and issues a special VAT invoice to the buyer, the seller may issue a red-ink VAT invoice in accordance with the relevant provisions of the current management regulations on the use of special VAT invoices because the buyer has purchased a certain amount of goods in a certain period of time or because the market price has dropped.