stainless steel solar water heaters, solar energy,solar water heater the whole set lowest price is only 180 usd(18 ... standard stainless steel, auto water add control, temperature and water level display, hot-cool water mixer valve, shower nozzle, water pipe 30m, heat preservation ... ; insulation:50mm polyurethane total forming with pressure and best density of 40kg/m3 Available sizes:16,18,20,24,30,36 ...