Jumbo light-focused Patent vacuum tube

 Key characteristic :  1) Utilizing nanotechnology ,Jumbo-light focused vacuum tube adopt interior reflector (Ag-Ti coating) on base of Tri-element vacuum tube, which make solar collector will absorb sunshine at 360 angle effectively. So will increase absorbable efficiency largely.     2)  Thermal efficiency increase by 10% -15% than normal vacuum tube solar water heater , by 5% than Tri-element vacuum tube solar water heater under same shushine and weather condition.
Jumbo light-focused Patent vacuum tube