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| NON-pressurized solar water heater |
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(1). Outer tank：SUS304 stainless steel，thickness0.4mm,。
(2). Inner tank：SUS304 stainless steel，thickness0.5mm。
(3). Frame ：1.5mm stainless steel
(4). Insulation：55mm thickness foamed polyurethane
(5). Vacuum tube：L1800mm/φ58，L1500mm/φ47。
(6). Tank model：φ470，φ420，specification：18, 20, 24, 30
(7).Capacity： 100L - 250L
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