... Solarkeymark standar flat plate solar collector, IMPOSOL evacuated tube solar collector design uses evacuated tube and heat pipe technology, providing high efficiency solar thermal conversion. Certified to ... ,800mm / 58mm, 10 tubes -30 tubes . Resist 25mm hail(4) Tank:100L, 100L, 200L, 300L,400L,500L,1000L(5) Collector housing: stainless steel ...