There are several companies offering mould area dehumidifcation systems. They will all prevent mould sweating. Eisbaer from Austria and Piovan from Italy come to mind readily. Wittmann may also have solutions. Eisbaer offers a rather unique solution using part of the cooling water used for mould cooling
to keep the surrounding air at same temperature through heat exchangers. This will ensure the mould and the air around it will have temperature balance thus preventing mould sweat, no matter at what temperature the mould is run.