When working or moving in hot environments, maintaining the proper body temperature is essential to prevent heat stroke and improve work efficiency. Safety Cooling Vests are designed to solve this problem. These vests use a series of advanced technologies to help wearers stay comfortable in hot environments.

1. Phase Change Material (PCM) Technology
One of the core technologies of Safety Cooling Vests is Phase Change Materials (PCM). This material can absorb or release heat at a specific temperature, thereby keeping the temperature of the vest within a comfortable range. PCM achieves temperature regulation by switching between solid and liquid states. When the ambient temperature rises, PCM absorbs heat and changes from solid to liquid, which effectively reduces the temperature of the vest. Conversely, when the temperature drops, PCM releases heat and solidifies, thereby maintaining a stable body temperature.

2. Evaporative Cooling Technology
Another common cooling technology is evaporative cooling. Vests using this technology usually contain special wet materials or linings. These materials evaporate when in contact with air, absorbing a large amount of heat during the evaporation process, thereby achieving cooling. Such vests usually need to be soaked before use in order to fully realize the cooling effect during use. The advantages of evaporative cooling technology are its simplicity and efficiency, especially suitable for use in high humidity environments.

3. Circulation Cooling System
Some high-end Safety Cooling Vests are equipped with a circulation cooling system. This system includes built-in cooling pipes and a circulation device for cooling liquid. The cooling liquid circulates through the pipes inside the vest, removing heat from the body surface. This system is usually powered by an external cooling device, which can be battery-driven or supplied by other forms of energy. The circulation cooling system provides a continuous cooling effect and is very suitable for people who work in high-temperature environments for a long time.

4. Heat Dissipation Materials
Some Safety Cooling Vests use high-tech heat dissipation materials that have excellent thermal conductivity and heat dissipation. These materials can quickly transfer heat from the body to the surface of the vest, thereby avoiding heat accumulation. By enhancing heat conduction, these vests can effectively reduce the wearer's body temperature.

5. Active cooling system
The latest Safety Cooling Vests may also be equipped with an active cooling system, which uses a built-in small fan or other mechanical device to actively blow air to increase air circulation and thus improve the cooling effect. This system can provide stronger cooling capabilities, especially in extremely high temperature conditions.