high absorption rate, convenient for houses and industries supply large hot water,CE,ISO,SRCC,Solar Keymark,SGS approved Dimension mm2000*1060*80Cross area sqm2Absorber area sqm1.8Optical efficiency %77.3Loss coefficient a1 w/m2K3.9Loss cofficient a2 w/m2K20.0052Capacity2Joint Dimension mm25/22Mximun working pressure Mpa1Working Temperature-40~150Weight KG34Core ModelCopper/Cu-AlGlass cover ...