... evacuated solar water collector CE,SOLAR KEYMARK, ISO9001,SGS High quality competitive price Best after-sales s high quality comeptitive price Solar ... 10,12,15,18,20,25,30 pieces.4. Manifold: Aluminum alloy.5. Flow pipe: Copper.6. Insulation Layer: Polyurethane ... +rockwool.7. Bracket: Stainless steel,Aluminum alloy,Galvanized steel.8. Working Pressure: 7 bar.9. Hail ...