product manual
Plastic-steel doors and windows are newly developed energy-saving building doors and windows.
It is a new type of chemical building material. It is also the fourth-generation energy-saving door and window after wooden doors and windows, steel doors and windows, and aluminum doors and windows. It is a high-quality energy-saving product recommended by the Ministry of Construction. Because of its beautiful appearance, strong corrosion resistance, good water tightness and heat insulation, and easy maintenance, it is more and more popular.
