Curtains (sometimes mainly called drapery curtains in the United States) are a piece of cloth used to block or block light, for example, for shower curtains, it is water flow or water. Curtains are also movable screens or decorations in theatres that separate the stage from the auditorium or serve as a background.

The curtains hanging at the door are called porches. Curtains are usually hung inside the windows of a building to block the passage of light, for example at night, to help sleep or prevent light from escaping from the outside of the building (usually for privacy reasons, to prevent people outside from seeing the interior). In this application, they are also called "curtains.". Curtains come in a variety of shapes, materials, sizes, colors and patterns, and usually have their own areas in department stores, while some stores are fully dedicated to selling curtains.

Curtains vary according to cleanliness, UV degradation, oil and dust retention, noise absorption, fire resistance and service life. Curtains can be moved manually with ropes, button pads or remote control computers. Keep them out of the window with curtain ties. Measuring the curtain size required for each window will vary greatly depending on the type of curtain required, the size of the window, and the type and weight of the curtain.

Curtain is a form of curtain, which can make the overall appearance of the house complete. Window treatment helps to control the atmosphere of natural light and the flow into the room. The effect of curtain or curtain is best to see in sunlight, and the indoor light position is appropriate, even at night can also look attractive.