For hot water supply and central heating of the factory showers, sportbuildings, hotels, apartments, campus, restaurants, family house etc. and central heating, swimming pool's water heating. Because of the unique technical solutions, invented by NASA, the 60-70% of the annual hot water demand can be saved by the Vacuum Tube Solar Collector within short returning period.

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The vacuum tube solar collector system utilizes the solar insolation by high efficiency even in claudy winter season thanks for the vacuum insulation and the three special layers of absorber.