ITRI developed a new Metal-Organic Frameworks (MOF) solid desiccant. Compared with traditional adsorbents, the adsorption capacity was increased by more than 30%, and the regeneration temperature dropped from 100~180℃ to below 80℃, which the high-efficiency heat pump can drive. ITRI also devises a low regeneration temperature ionic liquid desiccant. Because of the liquid property, the ionic liquid desiccant system has a significant advantage in system design. However, the lowest dew point of liquid desiccant is lower than that of solid desiccant, so both have their characteristics. These technologies can be applied to compressor air dryers, atmospheric dryers, process environmental control rooms, and dehumidifiers.