high absorption rate, convenient for houses and industries supply large hot water,CE,ISO,SRCC,Solar Keymark,SGS approved ... /Cu-AlGlass cover material and thicknessLow iron rhombic teempred glass 3.2mmFrame material and colorMatt electrophoresis aluminum profile( ... thickness40mmSealing materialSpecial flexible mtal sealing, whose reliability and use life are higher than rubber sealingBack panel material ...