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1. Tank in tank design makes supply of the daily hot water more efficient than the tanks have heat exchanger in side2. Cost reduce
3. Efficient heat exchange compare with copper pipe coil .4. Inner tank is SUS304 stainless steel,galvanized zinc steelnc outer case
5. .Optional electric heater and thermostat :3KW, 6KW,9KW
6. 100L/200L;200L/300L
Energy saving, good insulation, high quality, CE approved Jacket Tank boiler