https://camnangxnk-logistics.net/thong-tu-so-27-2021-tt-btc-cua-bo-tai-chinh-sua-doi-bo-sung-mot-so-dieu-tai-thong-tu-so-19-2014-tt-btc-ngay-11-thang-02-nam-2014-cua-bo-truong-bo-tai-chinh-quy-dinh-thu-tuc-tam-nhap-khau-tai-xuat/