1.Solar Keymark(EN12975) appoved 2.Long service life:25years 3.MOQ: 3 pieces 4.Best quality, fast delivery ,low price Product information:1) Low-iron Tempered Glass,4mm thick2) Core absorber panle :black chrome 3) Glass fiber warm keeper,can be widely used in real estate, hotels, hospitals, factories, offices, swimming pool, student apartments and others lager sites where need much hot water .4) ...