danger How to properly protect against deadly hydrogen fluoride and hydrofluoric acid

Due to the involvement of many highly hazardous chemicals in fluorine chemical production, there are potential safety hazards such as leakage, poisoning, and explosion during the production process. Hydrogen fluoride is a by-product gas generated during fluorine chemical production. Hydrogen fluoride is a colorless, non-flammable gas with a strong irritating odor. It is soluble in water to produce hydrofluoric acid, and the dissolution process releases a large amount of heat. Hydrofluoric acid (HF) is a colorless, transparent liquid with a pungent odor and strong corrosivity. It can react chemically with many metals to produce hydrogen gas, posing a risk of combustion and explosion. According to the classification in GBZ230—2010 "Classification of Hazards for Occupational Exposure to Toxic Substances", hydrogen fluoride is classified as a highly hazardous medium.

In the American TV series "Breaking Bad", the operator, Walter White, once used hydrofluoric acid as a corpse dissolving solution and said: 
“Hydrofluoric acid won't eat through plastic. It will, however, dissolve metal, rock, glass, ceramic.” 
"Hydrofluoric acid cannot dissolve plastic, but it can eat through metal, stone, glass, and ceramics."