by
Haining Hengji Solar Energy Technology Co.,Ltd.
Inner water tank: SUS304-2B stainless steel, 1.0mm-1.2mm thickness.Outer water tank: Color coated steel, 0.31-0.41mm thickness.Insulation layer: Polyurethane foam, 30-60mm thickness.Pipes: stainless steel.Frame: Galvanized steel, 0.8-1.4mm thickness.Frame angle: 20-58 degree. Vacuum tubes: ALN/AIN-SS/CU layer, 47 1500mm/47 1800mm/58 1800mm/70 ...