In order to further improve the standards for ultra-low energy consumption buildings and promote the high-quality development of the passive ultra-low energy consumption building industry. When formulating ultra-low energy consumption building standards, some provinces not only give the current value of the thermal performance of transparent envelope structures, but also propose target values. For example, in formulating the design standard for ultra-low energy consumption residential buildings in 2019, Beijing proposed a target value for the heat transfer coefficient of the whole window of ≤0.8W/(m²·K).

On June 1, 2022, Hebei Province released the "Catalog of Technologies and Products Encouraged for the Development of the Passive Ultra-Low Energy Consumption Building Industry", which also requires that the K value of the whole window of passive doors and windows is ≤0.8W/(m²·K).

Xinliji vacuum glass, when combined with the 90-series polyurethane-insulated aluminum alloy profile, achieves a K value of 0.8W/(m²·K) for the whole window. The whole window not only has excellent thermal insulation performance but also has good air tightness, water tightness, and wind resistance performance. According to the current national standard "Classification and test methods for air permeability, water tightness, and wind resistance performance of building exterior doors and windows" GBT7106-2019, its air tightness level is ≥ level 8, water tightness level is ≥ level 6, and wind resistance performance level is ≥ level 9.

Excellent thermal insulation performance and good air tightness significantly improve the energy efficiency of passive ultra-low energy consumption buildings, reduce the annual heating and cooling needs, maintain a uniform and constant indoor temperature and humidity, making it more energy-efficient and comfortable.

This series of vacuum windows has excellent thermal insulation performance and a lightweight structure. Compared with insulating glass windows of the same performance, it can save about 30% of profiles, reduce carbon emissions during the production process, and is convenient for transportation and installation at the same time. The excellent thermal insulation performance can reduce energy consumption during the building operation process, achieve energy conservation and emission reduction throughout the building's life cycle, and provide a more cost-effective solution for energy conservation and carbon reduction in the construction field, helping to achieve the "dual carbon" goals.