Evaporative Coolers (also known as eco-friendly air conditioners, evaporative water-cooled air conditioners, coolers, air coolers, and water-cooled air conditioners) are a comprehensive evaporative cooling and air exchange unit that combines cooling, air exchange, dust prevention, and odor removal. In addition to bringing fresh air and lowering temperatures to industrial workshops and public places, the key feature of eco-friendly air conditioners is --- energy-saving and environmental protection! It is a completely new eco-friendly product with no compressor, refrigerant, or copper pipes. The evaporative cooler operates on the principle of water evaporation, achieving cooling through a physical method, thereby solving the problem of excessive "freon" emissions from conventional air conditioners. It uses a wet curtain as the cooling medium, with water flowing evenly down the wavy surface of the wet curtain from top to bottom, ensuring uniform moisture distribution. When the fan draws air, it creates pressure that forces unsaturated air to pass through the porous and moist wet curtain surface. This converts a large amount of moisture in the air into latent heat, causing the air entering the room to drop from the dry bulb temperature to nearly the wet bulb temperature, increasing the humidity. This transforms dry, hot air into clean, cool air, thereby achieving the effects of cooling and humidifying.