Someone accidentally touched hydrofluoric acid, and at first I felt a slight pain in the affected area, but I didn't notice it. After a while, the pain gradually worsened, and when I saw it, the skin showed erythema, which then ulcerated, the color was gray, and the surrounding areas were swollen, and its appearance was terrifying.

When I saw it on the left and right, they were all terrified, and the doctor arrived at it quickly. When the doctor came, he looked at the wound, and looked solemn, saying: "Hydrofluoric acid is more harmful than other things. This acid enters the body, not only hurts the skin, but also corrodes the bone, and the pain lasts for a long time. If it is not treated quickly, there may be serious trouble."

Then he urgently applied the method of rescue and treatment, first rinsed the wound with a large amount of water, and after a long time, applied a special medicine The injured lay on the couch, crying out in pain, and everyone was worried.

Since then, everyone is aware of the danger of hydrofluoric acid, and they are extra cautious in everything, not daring to be negligent, for fear of repeating this disaster.