Products model sc-ip01(integrative pressurized solar water heater) Products intro Material: A) inner water tank: sus304 B) outer water tank: galvanized steel alloy C) bracket: galvanized steel or aluminum alloy Solar vacuum tube with heat pipe: A) size: 58 x 1, 900mm B) qty: 20 / 24/ 30pcs Temperature insulation layer: 50mm thickness imported polyurethane, machinery overall for keeping same temperature And high pressure foam Capacity: 200 / 240/ 300 liters Max. Pressure bearing: 1.2mpa 3 years' international responsibility for free repairing or exchange due to original quality problems