... pipes, heating up fast, anti-cold Adjust the temperature, security, anti-hot Longevity series solar water heater with a new generation of ... control water flow, let the water temperature is kept between 35-40 °C, to achieve constant temperature water, safe Anti-hot, high quality ... impact. CFC-free pipes, heating up fast, anti-cold, high thermal efficiency CFC-free tubes of the three targets using the ...