... .COP: 5.2 3.Patent Titanium heat exchanger 4.CE & ETL Air To Water Pool Heat Pump, Spa heat pump, pool ... every unit before pacage in the factory. CERTIFICATIONSCE, CB, EC, ETL, CETL, C-TICK, WATER MARK, STANDARD MARK, UL, SABS, SANS ... Production and Management MACON swimming pool heater(CE, CB, EC, ETL, CETL, C-TICK, WATER MARK, STANDARD MARK, UL, SABS, SANS ...