Blue Coating Features: *Germany high selective blue coating applied for the absorber; *Laser welding between full aluminum absorber and copper tubes ensure good conductivity of heat and firm structure; *Low iron tempered textured glass with high transmittance up to 92%; *Super large effective heat absorption area offers higher heating efficiency and more energy saving; *25 years design life span with max 0.8Mpa pressure; *Have passed EN12975-1, 2, ISO9806-1 tests; *Solar Keymark, SRCC certificated. Packing: Carton Dimension:2000*1000*80