Using compact non-pressure solar water heater can save 360KW per year compare with electrical water heater long life time.
The life time of solar water heater for 15 years.
The Sealing ring is adopted and the performance of heat preservation and sealing is better. Multi layer coating technology is used.
The heat absorption is stronger than the cold resistance is better.
The vacuum time is strengthened and vacuum degree is greatly improved, so that the effect of heat is insulation and heat preservation is more obvious.