Material: aluminum alloy of chest and bracket
Solar vacuum tube with straight copper heat pipe
15, 20, 25 and 30 pieces of tube
Hail resistance: diameter 25mm equal 1MPa
Temperature insulation layer in chest
Imported polyurethane, machinery overall for keeping same temperature and high pressure foam
50mm thickness for maximum 72 hours of temperature conservation
Maximum pressure bearing: 0.6MPa
Optional connection accessories and control system
Three years for whole system and 15 years for vacuum tube
