1. Provide 365 days a year, 24 hours a day, hot water, using the caliper water pump control, and the constant temperature return control system, keep the constant temperature hot water supply at any time, no water temperature is unstable,
1. Provide 365 days a year, 24 hours a day, hot water, using the caliper water pump control, and the constant temperature return control system, keep the constant temperature hot water supply at any time, no water temperature is unstable,
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