1. The evidence that the whistleblower needs to provide includes the name, company name and company address of the whistleblower;

2. The factual evidence of tax violation includes account book vouchers, tax returns, financial accounting statements and other tax payment materials, contract agreements, invoices, receipts, etc., and a copy of the original. The tax bureau is the government agency in charge of tax work, and undertakes the duties of tax and non-tax revenue collection and management within its jurisdiction.