... ,CB,ISO9001,ISO14001 central air conditionerCOPELAND, Hitachi, Panasonic compressorhigh efficient hydrophilic aluminum foil air cooling heat-exchangerentire copper tubing water cooling heat-exchangerEmerson expansion valve ... , reliable, energy saving, green, pollution-free. Multi functions: air conditioning (Heating + cooling) Unit TypeAAC-25M/RMAAC30M/RMAAC52M/RMAAC65M/RMAAC52M/RM*2AAC65M/RM ...