1)Among all kinds of building windows, UPVC plastic windows have outstanding advantages in saving energy
consumption of profile production, recycling and recycling of recycled materials, and have excellent performance
and price ratio in terms of heat preservation and energy saving;
2) In order to increase the rigidity of the window, in the sash, sash, and sash material, the reinforced steel should
be determined according to the design of wind resistance and other requirements.