Postal Explorer > Publication 52 - Hazardous, Restricted, and Perishable Mail > 6 International Mail
6 International Mail
61 General
62 Hazardous Materials: International Mail
621 General Requirements
621.1 Mailing Conditions
621.2 Hazard Classes
621.3 ORM–D Materials
621.4 APO/FPO Mail
622 Mailable Hazardous Materials
622.1 General
622.2 Biological Substances, Division 6.2
622.3 Radioactive Materials, Class 7
622.4 Magnetized Materials
622.5 Lithium and Lithium-ion Cells and Batteries — General
623 Nonmailable Hazardous Materials
63 Restricted Matter: International Mail
631 APO/FPO Mail
632 Firearms
632.1 Export to APOs/FPOs
632.2 Import
633 Knives and Sharp Instruments
634 Drugs
635 Controlled Substances
636 Other Restricted Matter
64 Perishable Matter: International Mail
641 APO/FPO Mail
642 Animals
643 Eggs
643.1 Fresh Eggs
643.2 Dried Whole Eggs
644 Plants
645 Fresh Foods and Other Perishables
