A constant temperature and humidity machine is a controlled temperature and humidity air conditioning equipment that integrates cooling, dehumidification, heating, and humidification; It is centrally controlled by its control system through the principle of positive and negative cancellation of heat and cold, and the principle of humidity neutrality; To meet the control requirements of temperature and humidity. The SD series constant temperature and humidity air conditioning unit is another high-quality product developed and designed by our company based on absorbing numerous latest design achievements at home and abroad, combined with our own technology. It is mainly suitable for air conditioning environments with high requirements for air temperature and humidity quality; This unit has multiple models to choose from and is currently widely used in various places with high temperature and humidity