solar glass tube
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solar vacuum tube
1) high quality and reasonable price
2) environmental friendly
3) nice design
4) ISO9001:2000
1.Inspect the vacuum tube to see its end , if it is still silver in color and keep intact ,it is of good quality . 2.compare the good quality tube and inferior quality tube . 3.place the rubber cap on the end of the vacuum tube 4.insert the two edges of tubes into the manifold.
5.then it is completed and well installed in any sunny places to absorb the solar energy .
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