Warm-Edge Spacer System
Jiacheng 4SG utilizes the original German Kömerling 4SG flexible warm-edge system. Free of metal thermal-conductive components, it eliminates the "thermal bridge effect" associated with traditional aluminum spacers at the source; it maintains an argon gas retention rate of ≥90% over 20 years, ensuring no degradation in long-term thermal insulation performance.
Cavity Structure Design
Featuring a triple-pane, dual-cavity structure with two independent insulating layers, it offers over 40% better thermal insulation than standard double-pane insulating glass. The optimal gas spacer thickness is 12mm, which minimizes heat transfer via gas convection.
Gas Fill Type
Thermal conductivity ranking: Dry Air > Argon > Krypton. Insulating glass filled with krypton can achieve a U-value as low as 1.26 W/(m²·K), delivering superior thermal insulation compared to argon-filled products.
Low-E Coating Grade
Triple-silver Low-E coating offers the lowest emissivity and the strongest near-infrared reflectivity, outperforming double-silver and single-silver Low-E glass. It significantly reduces solar heat gain during summer while maintaining high visible light transmission.