The indoor shading and heat preservation curtain of the greenhouse not only has the function of reducing indoor light intensity and cooling during the day, but also has the function of reducing the indoor heating space at night and enhancing the heat preservation capacity of the greenhouse. Therefore, whether it is to build a greenhouse in the south or the north, indoor shading and heat preservation curtains have almost become the basic configuration of greenhouse equipment. If you want the sunshade and heat preservation effect of the sunshade and heat preservation screen to be exerted to a greater extent, the following points are critical: