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This is a Household Oxygen-Free Copper Gas Water Heater,that uses an oxygen free copper heat exchanger, with a thermal efficiency greater than 89%; Wide temperature range of 35-65 ℃, with more…

This is a Household Oxygen-Free Copper Gas Water Heater,that uses an oxygen free copper heat exchanger, with a thermal efficiency greater than 89%; Wide temperature range of 35-65 ℃, with more…

This is a Household Oxygen-Free Copper Gas Water Heater,that uses an oxygen free copper heat exchanger, with a thermal efficiency greater than 89%; Wide temperature range of 35-65 ℃, with…

This is a Household Oxygen-Free Copper Gas Water Heater,that uses an oxygen free copper heat exchanger, with a thermal efficiency greater than 89%; Wide temperature range of 35-65 ℃, with…