... ,CE,SK, SRCC,ISO 4,Delivery:15 days solar energy collector with heat pipe approved by ISO,CCC,CE ... efficient heat transferring and long life span.of the solar water heater4. Exquisite workmanship to guarantee the decent ... and no extra cost after installation8. Easy installationSOLAR ENERGY COLLECTOR APPLICATION1) The water is heated by the ... in the event of occasional tube breakages solar energy colleter