... collector System 1.SOLAR KEYMARK,SRCC,CE 2.Antifreezing -40 degree 3.OEM provide Split pressurized Vacuum tube solar collector ... : aluminum alloy, thickness: 3.0mmFeature:1.That collector can install anywhere, space is unlimited. on roof ... can designed like swimming pool heat system. Heat Pipe Solar Collector Detailed SpecificationItemPartsDescriptionManifold boxManifold Outer Case1001 Aluminum ...