1)tank can be placed in ny place of the house; high absorption rate; antifreeze, antihail 2)good heating result Storage tank:1.tank capacity (L): 100,150,200,260, 300,400, 5002.inner tank material: SUS304-2B, thickness (mm): 1.0, 1.5, 2.0,3.outer tank mterial: color steel4.inssulation layer: polyurethane foam, thickness: 50mm, 55mm5.working pressure: 0.6Mpa-0.8Mpa6.Electrical heater: 1500w, 2000w ...