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    China's building energy consumption accounts for 33% of the country's total energy consumption. As an important part of the building envelope, doors and windows are the weakest barricade that protects the indoor energy from losing outdoors. Energy loss through doors and windows accounts for 50% of energy consumption of buildings, 75% of which is lost through glass. In summer, solar heat and ground heat entering the house increases 73% of air conditioning. In winter, the loss of heat toward outdoors increases 58% of heating. Energy-saving glass is the key to energy efficiency of buildings. The Passive House, however, minimizes energy consumption of the traditional heating and air conditioning system.


    CNG actively participate the preparation of countries and industries standards in building energy-saving products and industry market normative guidance. It is the main drafting units of building energy-saving glass, a passive low-energy building glng parameters: visible light transmittance, total solar infrared energy transmittance gIR, heat transfer coefficient K. ass and other glass standard. CNG passive house glass is among the first to obtain industry certification.


    Key energy-savi


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