"Door system": It is a system developed for engineering design, manufacture, and installation of building doors and windows that meet the set performance and quality requirements. .

"System doors and windows": It is a perfect organic combination of performance systems. Using the system integration way of thinking, based on the door and window systems developed for different regional climate environments and functional requirements, various performances, such as water tightness and air tightness, need to be considered. , wind pressure resistance, heat insulation, sound insulation, heat preservation, anti-theft, operating feel, etc., are designed, manufactured and installed in accordance with the overall solution requirements and strict procedures, and finally form high-performance system doors and windows with high reliability and high cost performance. Building doors and windows.

The real energy-saving system doors and windows are not single use of heat-insulating broken bridge aluminum profiles or Low-E insulating glass energy-saving materials. It is a perfect combination of a system, and the comprehensive results of the performance of each link are indispensable. At present, the most representative brands in the domestic market include: YKK AP, Jiayu, Aluk, Beiluo, Shubiao, Feiyu and other brands.

Convection: The loss of heat is the circulation of hot and cold air through the gap between doors and windows, and the heat is exchanged through gas convection, resulting in heat loss;

Conduction: Heat conduction is the heat transfer by the molecular movement of the material itself used for doors and windows, and it is transferred from one side of the material to the other side, resulting in heat loss;

Radiation: Radiation is mainly transmitted directly in the form of rays, resulting in loss of energy consumption.

What is the difference between system doors and windows and ordinary doors and windows?
1. In terms of stability and performance
The system doors and windows have their own independent technical department, which will carry out strict tests and inspections on each component of the system doors and windows, so the components are well matched and are not prone to failure, which is what we often call good stability. Ordinary doors and windows are assembled by ordering different parts according to their own needs, but there will be some problems in the process of use, and the stability is relatively poor. After 2 to 3 years of research and development of system doors and windows, the materials, the performance and quality of the entire doors and windows are comprehensively tested, and mature products are launched after reaching the expected goals. Ordinary doors and windows are temporarily integrated door and window products for a single project, often without comprehensive testing.
2. Flexibility
The various components of the system doors and windows have been fixed according to different performances, and the room for selection is relatively small compared with ordinary doors and windows, so the flexibility is small. Ordinary doors and windows can flexibly configure their own components according to their own needs. System doors and windows are serialized and standardized products, with strong exclusivity and incompatibility in slot structure and material supply, and can only be selected according to the needs of the project. Generally, individual projects will not be developed. Common door and window materials can be selected by domestic and foreign manufacturers, and can also be temporarily opened, with strong flexibility.
3. Software aspects
While providing products, system doors and windows also provide design software, design manuals, procurement manuals, processing manuals, professional special equipment and technical service support, which is a complete industrial chain. The quality of ordinary doors and windows depends on the level of designers and the ability of door and window enterprises to process and install.