... iron glass is specially produced to meet the needs of solar energy industry, made of mature low iron, glass, it has ... of iron, strong luminousness and high conversion rate of solar energy. We got the SPF U1 certification.Low Iron Pattern ... 2.5 -6.0mm, standard thickess 3.2mm.Applications:solar panels, solar energy collectors.low iron tempered glassPacking: wood crateStandard:Spf U1 CEProductivity ...