flat solar project: 1.high hot water produced 2.CE,ISO9001,CCC,certificate 3.solar collector work over 15 years 4 ... shock, no blasting etc.4. Free of charge in using the solar energy to get the hot water, ... years.6. Diverse specification, fit for different kind of family.7. There always has hot water, ... supplying.9. You can even use the heat of the Solar Water Heater to cook, make hot water drink ...