Baoguang hitech tri-element plated solar vacuum tube made of extremely strong borosilicate glass material;coated by CU/SS-ALN

Baoguang hitech tri-element plated solar vacuum tube made of extremely strong borosilicate glass material;coated by CU/SS-ALN which has top absorbtion rate and very low emission.Our tubes are widely used on solar water heater and solar collectors.See more please click CNBG.CN

Hitech tri-element plated solar vacuum tube