... pressurized heat pipe solar collector with boiler 1.SOLAR KEYMARK,SRCC,CE 2.Antifreezing -40 degree 3.OEM provide Separated pressurized heat pipe solar collector with boiler1,Size:58/1800,47/1500 2,CE,SRCC,Solar ... keymark 3,Lifetime:15 years 4,Delivery date:7-20 days.Specifications:Solar energy collector ...