Four-season hot water unit capable of refrigerating in summer and heating in winter
The four-season hot water unit capable of refrigerating in summer and heating in winter comprises a cold-warm hot water machine and a hot water system. The system is characterized in that refrigeration and hot water in summer are free, more than 70% of electricity is saved for heating water in sprin...
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Format: | Patent |
Sprache: | chi ; eng |
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