Test Report
How to choose the system window? Just look at the performance test report！
Now many owners friends buy doors and Windows products, will encounter businesses will say that their products are system Windows, using various brands of materials, glass, hardware, auxiliary materials, but ultimately as a consumer to buy or the performance of doors and Windows, in order to improve the quality of the home, so want to buy a real good performance of the system window, Look at the authoritative department issued by the window type performance test report to know it!
