Vacuum Tube Solar water heater: CE certified, high efficiency, TIG welding, easy installation, reliable quality, good finish. Super stainless steel CE certified ... Food class SUS 304 2B stainless steel sheet with thickness of 0.5mm;Inner tank Dia.: 310mm, 360mm, 500mm; ... 600mm;Insulation material: High pressure PU foaming with thickness of 55 mm;Stand: Stainless steel profile, high intensity aluminum ...