solar collector high hot water produced, pressured, anti-insolate, water heated in the copper pipe OEM is welcome split pressured solar collector 1,Size:47/1500,58/1800,CE,SRCC,Solarkeymark 2.Lifetime:15 years 3.Offer OEM service 4.Delivery date:7-15 daysolar collector(10-30pcs vacuum tubes)Specifications:size: 47mm,1500mm,/58mm,1800mm, tube quantity calculate the tank capacity,copper pipe: ...