... , good finish, competitive price Features of our vacuum tube solar water heater:CE certified, igh efficiency, reliable quality, inner tank TIG ... .47/1500,Dia.58/1500, Dia.58/1800,Dia.70/2000;Vacuum Tube qty: 12pcs, 15pcs, 18pcs, 20pcs, 24pcs, 30pcs, 60pcs ...