Piece-dyeing expert Sotoh and yarn-dyeing experts Kyowa Senko and Bisen Senshoku in the Bishu manufacturing region have formed a cluster.According to the top official of Owari Textile Research Center of Aichi Industrial Technology Institute, those three firms were becoming partners in a complementary relationship for the purpose of quality improvement, shortening delivery time and advanced product creation, and the center is willing to provide technical support if requested.