Split Pressurized solar thermal system 1.SOLAR KEYMARK,SRCC,CE 2.Antifreezing -40 degree 3.OEM provide Split Pressurized solar thermal system1,Size:58/1800, ... 47/1500 2,CE,SRCC,Solar keymark 3,Lifetime:15 years 4 ... ,Delivery date:7-20 days.Specifications:Solar energy collector:Size: 47mm ...