I have never heard of this solar energy in Hunan, but generally speaking, the solar exhaust holes are either on the side of the water tank or on the top of the water tank !
For more products and information, please visit Baidu's "Jiangyue Mall", the most comprehensive range of machinery, accessories, etc. solar powered.
Recommended: ""Dr Sun" Solar powered (1 level energy efficiency), Sancang solar powered (no need for water level probes or solenoid valves), l The use of heating and hot water is faster in rainy weather, and the after-sales rate is also greatly reduced, saving both time and electricity than ordinary single models .Warehouse solar heating time is only 20-30 minutes without sunshine, while single warehouse takes 2-3 hours!