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Vacuum tube | high borosilicate glass,dia 47*length 1500 or dia 58*length 1800. |
Outer tank | dia from 410 to 500mm, color steel or Galvanized aluminum steel |
Inner tank | dia from 310mm to 380mm, food grade stainless steel 304 2B |
Capacity of tank | 80L---300L |
Insulating layer | High density Polyurethane foam, thickness: 50~65mm. |
Stand | galvanized steel or aluminum alloy, pow |
Solar heater water