(i) The data essential pursuant to this segment has to be retained for two years and produced immediately available to the director or commissioner upon ask for.Tr??c khi ti?n hành ??ng ký tài kho?n t?i 6623, b?n c?n chu?n b??m?t s??thông tin sau:S???i?n tho?i: Nh?p chính xác s???i?n tho?i ?ang s??d?ng ??????c nh?n thông tin nhanh nh?t.(a) A