门窗系统（又称为系统门窗或系统窗），是指组成一樘完整的门窗各个子系统的所有材料（包括型材、玻璃、五金、密封胶、胶条、辅助配件及配套纱窗），均经过严格的品牌技术标准整合和多次实践的标准化产品，利用专用的加工设备和安装工具，并按照标准的工艺加工和安装的门窗。对于“系统窗”和“普通窗”的区别，可以通过电脑的“品牌机”和“组（拼）装机”做比喻，目前在项目招标中经常提到的“高档断桥铝合金窗”，即使各项材料均使用一些品牌产品，但门窗整体缺乏统一的技术设计整合，构成门窗的各个子系统的材料之间配置不合理，兼容性不好，很难保证整窗的优异性能，更无法达到甲方项目最优的性能价格比要求。
Door and window system (also known as system door and window or system window) refers to all materials (including profiles, glass, hardware, sealant, adhesive strips, auxiliary accessories and supporting screens) that constitute a complete door and window subsystem. They are standardized products that have undergone strict brand technical standards integration and multiple practices, and use special processing equipment and installation tools, And according to the standard process processing and installation of doors and windows. The difference between "system window" and "ordinary window" can be compared through the "brand machine" and "assembly machine" of computer. At present, the "high-grade broken bridge aluminum alloy window" often mentioned in the project bidding, even though some brand products are used for various materials, the doors and windows are lack of unified technical design integration, It is difficult to guarantee the excellent performance of the whole window due to the unreasonable configuration and poor compatibility between the materials of each subsystem of doors and windows, and even less to achieve the optimal performance price ratio requirements of Party A's project.