Dangerous goods are materials and items that pose a hazard to people, animals, the environment or public health/safety when shipped due to the nature of the materials/items or their state during shipment. Dangerous goods can only be shipped domestically (i.e. within Germany) in accordance with DHL Parcel’s dangerous goods regulations and in compliance with the underlying dangerous goods regulations for road transport as stipulated by Europe’s ADR treaty. Compliance with additional guidelines is also required, including defined maximum quantities per inner packaging and item shipped, additional standards for packaging and labeling, exclusion of certain material and objects).
Part 2 for domestic parcel shipping (DHL Paket national) "Regulations on the carriage of dangerous substances and articles":