Packaging and storage of products:
Hydrochloric acid products are packaged and transported in threaded glass bottles, plastic drums, and other containers. Store in a cool, dry, well ventilated warehouse with a temperature not exceeding 30 degrees Celsius and a relative humidity not exceeding 85%. Keep the container sealed. It should be stored separately from alkali, metal powder, and flammable substances such as fluorine, chlorine, and bromine, and should not be mixed during transportation. When handling, it should be handled gently to prevent damage to packaging and containers. Attention should be paid to personal protection during packaging and handling operations, and emergency leak equipment and devices should be prepared in the storage area.
It is recommended that operators wear acid and alkali resistant work clothes, rubber acid and alkali resistant gloves, and be equipped with corresponding quantities of fire-fighting equipment and emergency response equipment for leaks. Smoking is strictly prohibited in the workplace.  

In the chemical industry, hydrochloric acid is commonly used for pickling steel and is also a chemical reagent required for the large-scale preparation of many inorganic and organic compounds, such as the synthesis of chlorides.
In the food industry, it is used for food processing, such as making soy sauce, monosodium glutamate, etc.
In terms of human physiology, the main component of stomach acid in the stomach is hydrochloric acid, which helps digest food.