Publication 52 - Hazardous, Restricted, and Perishable Mail > 6 International Mail
6 International Mail
61 General
611 APO/FPO/DPO Mail
612 U.S. Possessions, Territories, and Freely Associated States
62 Dangerous Goods: International Mail
621 General Requirements
621.1 Mailing Conditions
621.2 Outer Packaging Requirements
621.3 Hazard Classes
621.4 Limited Quantity
621.5 Extra Service Codes and Shipping Service Files
622 Mailable Dangerous Goods
622.1 General
622.2 Biological Substances (Division 6.2)
622.3 Radioactive Materials (Class 7)
622.4 Magnetized Materials
622.5 Lithium Cells and Batteries — General
623 Nonmailable Dangerous Goods
63 Restricted Matter: International Mail
631 Firearms
631.1 Export to APOs/FPOs/DPOs
631.2 Armed Forces Member Imports
632 Inert Replica and Explosive Devices
633 Knives and Sharp Instruments
634 Drugs
635 Controlled Substances
636 Other Restricted Matter
64 Perishable Matter: International Mail
641 Animals
642 Eggs
642.1 Fresh Eggs
642.2 Dried Whole Eggs
643 Plants
644 Fresh Foods and Other Perishables