stand alone system:
The whole system include
solar collecotrs, tank, reflectors, and stand
Specifications:
vacuum tube: :Diameter 47x1500, 58/1500,58/1800
12tubes/16tubes/18tubes/20tubes/24tubes/30tubes
Tank cubage:130L-300L
Tank material: Color galvanized steel
Colar available: green,blue,white, more
Stand material: Color galvanized steel
Temp controller: optional
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