Specifications：3mm+18Ar+3mmDP+18Ar+3mmDP，Hollow glass with three glasses, two cavities, two plates and multiple screens, with Warm edge containing argo,K value reaches 0.54W/㎡·K, Life span up to 50 years. The transmittance of visible light is as high as 63%. Excellent energy saving performance, It is very suitable for use in passive low-energy buildings.