Solar system vaccum tubes spec.:1, Vacuum tube : Heat pipe  with ALN-AlN/SS/Cu coating2, Vacuum tube No:  18/ 20/ 24/ 30/35/40/50 heat pipes3, Vacuum tube dimension: 47x1500/58x1800mm4,

1.Professional manufacturer solar tube 16 year 2.Certificate:CE ISO9001:2008 3.High absorption efficiency 4. Low heat loss

three target solar vacuum tube 1.high quality&competition price 2.3years warranty 3.CE and CCC certificated

High Quality Solar vacuum Tube:1.high-activity: solar spectral absoprtion increased 14%,reflectance reduced by 30-40%2.high heat conductivity:Heat-resistant 200°C or so, anti-Alpine, minus 3 °

1, Vacuum tube is consists of two layer of glass tubes2, ISO900:2000, CE certificate;3, 0.91 transmittance of outer tube.4, The outer tube is made of extremely strong transparent quartz sand which can

solar vacuum tube Excellent resistance,corrosion keeping water clean Excellent performance of absorbing high efficiency

We adopted adanced Nanometer Technolgy. Vacuum tube Nanometer molecular engineering is applied to greatly improve the absorption function, the heat collecting ability increase 18%, the water temperatu