... Environmental protection Absorber area efficiency C portable solar system,portable solar energy,mini solar system msl05-04Features:Off-grid power ... DC to AC for AC load using. Solar system, solar power system, solar home system, with 13.1% transfer efficiency ... 58mmx1800mm(58mm=Diameter,1800mm=Length),higher efficiency, lower heat loss.4.Heat Preservation: Polyurethane Foam,50mm thickness, lasting 72 ...