Product Name: Standard Model Separate Solar SystemPlace of Origin: ChinaFeatures: 1) Collector size: 130mm x 130mm 2) Vacuum tube: 1,500mm / »47, 12pcs/sector 24 tubes/set 3) Vacuum tube: 1,800mm / »58, 15pcs/set, 20pcs/set or 30pcs/set 4) Tank: 150L, 200L, 300L 5) Collector housing: 0.8mm stainless steel, frame 1.5mm stainless steel, insulation material, rock wool or olyurethane 6) Porcelain enamel inner tank, super-big magnesium rod, scale-resist, endure 21 bar pressure 7) Works normally if one tube damaged