the whole set lowest price is only 180 usd(18 pcs 58x1800mm pipes,can supply 4-6 person washing),include the following system: The water bucket use food standard stainless steel, auto water add control, temperature and water level display, hot-cool water mixer valve, shower nozzle, water pipe 30m, heat preservation material, spare parts: collector tube 2 pcs glass tube length:58x1800mm /47x1500mm out tank material:Aluminum alloy with metal coating /stainless steel Dia.460mm/420mm/470mm outer tank. frame material:imported hot galvanized steel folded sheet with powder painting/stainless steel; insulation:50mm polyurethane total forming with pressure and best density of 40kg/m3 Available sizes:16,18,20,24,30,36 tubes with capacity 135ltr up to 325ltr Customized is available

solar water heater