> For the complete documentation index, see [llms.txt](https://how.doopage.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://how.doopage.com/thao-tac-danh-cho-quan-ly/quan-ly/thong-tin-khach-hang/quan-li-khach-hang.md).

# Phân loại khách hàng

####