1, original and photocopy of personal ID card (if there is an agent, the original and photocopy of the agent's ID card); 2. The original and photocopy of the equipment maintenance contract signed by the individual and the company (if you don't get the original, you can fax it and print it in color instead, so it won't be too difficult for the general staff, after all, it is to pay them); 3. Relevant information of invoicing: invoice header (company name), content, amount, etc. In addition, the items that need to be invoiced are divided into national tax and local tax. Don't make a mistake. Generally speaking, where it was repaired, the relevant tax authorities applied for invoicing there. As for how the company keeps accounts, ask the company's financial personnel, who know best. You'd better communicate with them before invoicing, if you have any special requirements and precautions.