... ; Holes:4 holes,water inlet and outlet,electrical heater,vent.2.Vacuum tubeModel:47mm*1500mm , 58mm*1800mm ... water tank,electrical heating element,controller,reflector is optional. MODEL Absorption area(m2) Vacuum Tube Cubage (L) G. ... text-decoration:none;font-size:12px; } 太阳能热水器, 太阳能, 太阳能招商, 太阳能热水器招商, 太阳能代理, 太阳能热水器代理, Solar Water Heater, Solar Hot water, Solar Water Heating, Solar Heaters, Solar Water ...