Rapid hemostasis is essential for first aid in war wounds, and tourniquets have been the first choice for battlefield treatment. With the changes in battlefield injuries and the development of hemostasis concepts, emergency hemostasis techniques have changed from physical hemostasis to chemical and biological hemostasis, so scholars in the field at home and abroad have developed and applied a variety of new hemostatic materials and methods.

We can protect our health to a certain extent by understanding the hazards of solvents, which are the most hazardous material components in solvent-based coatings for environmental pollution and human health. The toxicity of solvents refers to both the toxic effect of solvents on human body. Toxic solvents can be absorbed by the body through the skin and digestive tract and cause poisoning. The common toxicity of most organic solvents to the human body is in high concentrations of vapor contact performance of anesthetic effects.