non-pressure solar water heater,economical price and stable quality
Price Terms:FOB,CIF,EXW
Payment Terms: T/T,Western Union,MoneyGram,L/C
Minimum Order: Negotiatable
Delivery Port: Customized
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The selective coating on the inner cover of the evacuated tubes converts solar energy into heat energy and water in evacuated tubes absorbs the heat.When the temperature rises along with density drops,and weight goes down,hot water will go up to exchange with cold water in tank.In this way,the temperature of the water in tanl goes up.