New Tri-element vacuum tube
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Vacuum tubes assimilate the advanced 12 layers of spattering deposition of trivalten element technology,high borosilicate glass,gradual change of  ALN/AI N-SS/CU selective complex absorptive coating.And these make vacuum tubes have high performance of absorptance and low reflection ratio. Through the interlayer,vacuum has a unique effcet of thermo, with its temperature UP to 380℃ of idie sunning.performing a strong heating

 All glass vacuum tubes are made of inner tube and outer tube,between two tubes it is vacuum. For our bubes enjoy very good reputation among our users and have been widely used for home market and overseas.

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