Отличное качество 58 солнечных вакуумная трубка

Solar vacuum tube: 1.The Borosilicate glass agrees with ISO3585:1991, with the advantage of higher sunshine darting rate. 2.Collector of a magnetron sputtering coating process. 3. Selective deposition gradual absorption coating, the coating on the sun with a high absorption rate and low emission rate, absorbing than the sun, the hemisphere than the launch, the temperature of air drying, vacuum dissection of air pressure, nausea drying explosive convergence of , The average coefficient of heat loss 4. Can withstand the impact of hail, even in cold winter areas can also use 5.High heat effect and Low heat loss :keeping high vacuum degree between interlayers of vacuum heat collecting tube to reduce the heat loss caused by heat exchange and heat convection as maximum as possible. 6.Longlife time free replacement 7.bear chiliness 8.High intensity :can bear diameter 25.00mm hailstones Glass material