Led China knot consists of pvc tubes and tassels. The pvc tubes we use have a safety level up to the food grade. They are bright in color, both in quality and color. As for cloth, it is not an ordinary plastic tube; it is a new generation of environmentally friendly materials, non-toxic and non-irritating. It does not pollute the environment and is therefore internationally recognized as a "green product." Led China knot, full of pure color and fringed color does not fade, high quality, durable.