1. It is illegal not to buy ammonium nitrate from regular units; Illegal purchase of 1 kg black powder or 3 kg initiating explosive device is suspected of illegal manufacture, sale and transportation of firearms, ammunition and explosives, which is an illegal act. At the same time, people with no capacity for civil conduct, people with limited capacity for civil conduct or people who have received criminal punishment for crimes shall not engage in the production, sale, purchase, transportation and blasting operations of civil explosives.

2. Legal basis: Article 4 of the Regulations on the Safety Management of Civil Explosives.

The competent department of civil explosives industry is responsible for the safety supervision and management of the production and sale of civil explosives.

The public security organs shall be responsible for the safety management of civil explosives and the safety supervision and management of the purchase, transportation and blasting operations of civil explosives, and monitor the flow direction of civil explosives.

Safety production supervision, railways, transportation, civil aviation and other departments shall be responsible for the safety supervision and management of civil explosives in accordance with the provisions of laws and administrative regulations.

The competent departments of civil explosives industry, public security organs and administrative departments for industry and commerce shall be responsible for organizing and investigating illegal production, sale, purchase, storage, transportation, mailing and use of civil explosives.

Second, is it illegal to buy smuggled salt?

Buying illicit salt does not constitute a crime, but selling illicit salt is suspected of illegal business operation. The crime of illegal business operation refers to one of the following illegal business operations in violation of state regulations.

1. Without permission, engaging in franchise or monopoly commodities or other commodities whose operation is restricted by laws and administrative regulations;

2. Buying and selling import and export licenses, import and export certificates of origin and other business licenses or approval documents stipulated by laws and administrative regulations;

3, without the approval of the relevant competent departments of the state, illegally engaged in securities, futures or insurance business, or illegally engaged in fund settlement business;

4, engaged in other illegal business activities, disrupting market order, serious behavior.