Three years. Reed curtains can be used for three years and will fall off if exposed to the sun for a long time. Reed woven fabric is a traditional handicraft of Baiyangdian Reed Products Factory in Anxin County. There are many skilled craftsmen in the water town. The reed woven fabric produced by it not only uses the white reed of Baiyangdian Lake, but also has strong local characteristics. Reed woven products exported include vertical curtains, line curtains, fence curtains, reed ceilings and so on.