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Solar pipe features 1. Unique three-layer absorption technology (stainless steel/red copper/aluminum). 2. Allowing high temperature endurance and preventing peeling off even when the glass gets waxy degeneration 3. Unique Three-layer against degeneration, color fading or performance degeneration due to exposure the empty vacuum tube under the sun over time, 4. Extending the life of the product. 5. Incorporating three layer interference coating technology. 6. Unique super pure copper surface, allowing lower reflection and minimal heat loss. 7. Ideal efficiency of collecting heat in extremely cold temperature -40º C. (glass tube, evacuated tube, vacuum tube, solar water heater, solar heat pipe, solar vacuum tube, solar vacuum tbue heat pipe, solar water heater tube, solar pipe, solar glass tube, solar parts )
Vacuum Tubes of Solar water heater