solar energy water heater

1.en12975,SRCC and solar keymark certification
2.High pressure
3.More than 15 year lifetime.
1 Borosilicate glass according to ISO3585:1991; transmittance of borosilicate 2.glass:0.92.Absorbance of solar selective absorptive coating:0.94; Hemispherical emittance:0.08; 3.Getter according to GB/T9505-1998.
4.Start-up temperature: no more than 25.
5.Start-up time: no longer than 2 minutes under normal sunshine.
6.Low temperature resistance: no breaks at -30.
7.Heat impact resistance: no damage after over 3 time’s alternative impact of cold water below 25 and hot water over 90.
8.Pressure resistance: can withstand 0.6Mpa.
9.Hail resistance: no damage by the impact of 25mm diameter hail.