> For the complete documentation index, see [llms.txt](https://docs.ssaudit.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ssaudit.com/hoa-don-die-n-tu.md).

# 7. HÓA ĐƠN ĐIỆN TỬ

- [7.1 Cài đặt](https://docs.ssaudit.com/hoa-don-die-n-tu/cai-dat.md)
- [7.2 Nhập liệu](https://docs.ssaudit.com/hoa-don-die-n-tu/nhap-lieu.md)
- [7.3 Xử lý](https://docs.ssaudit.com/hoa-don-die-n-tu/xu-ly.md)