Feature Termal Performance: Heat insulation performance of IGU is the most ideal among all processed glass products available on the market.Heat transfer coefficient K value can be effectively reduced by IGU. If inert gas as neon, argon, helium is filled, heat transfer coeffiecient can be further dramatically reduced. Sound Insulation Performance: IGU is ideal sound insulating material. Normal IGU can reduce noise by 30 decibel, IGU filled with inert gas can further reduce 5 decibel. Anti-dew under Low Temperature: AS IGU is filled with enough desiccant,it can effectively absorb the vapor in the iner space or penetrated from outside to ensure the gas in inner space is absolutly dry and won't dew. Optical Performance: Various glass substrates can be used for IGU to meet the request of sunlight transmission and reflection. Light Weight: Under the same condition heat insulation, the replacement of partial brick wall or concrete with IGU can reduce load of building and simplify building structure.