Japan's Aichi Prefecture Institute of Industrial Technology Mikawa Textile Technology Center recently announced that the center has successfully developed from orange leaves and natural dyes extracted technology can be used for dyeing cotton products. The prefecture of Gamagori in the Mikawa region is Japan's famous orange producing area. A large number of orange branches and leaves will emerge once a year as the pruning season progresses. Sanhe Textile Technology Center oranges and leaves will be boiled, after dye distillation dye successfully extracted. Extracted dye pigment powder, completely soluble in water, can be used as a dye. Sanhe Textile Technology Center also found that if you use metal dye-assistants, but also get different colors, such as the use of aluminum to help get the yellow dye, the use of iron dyes to help get brown and so on. According to reports, Sanhe Textile Technology Center has also developed from the local agricultural products such as purple wheat, black rice pigment extraction technology, and effectively used in textile dyeing and finishing.