The World Headquarters of Rexair LLC is located in Troy, Michigan in the U.S.A. It is from here that the sales, marketing and ... independent worldwide distribution network of the Rainbow is coordinated and administered. The Rainbow Cleaning System has been the exclusive product of Rexair LLC for more than 80 years. Its legendary water-based filtration system has made the Rainbow known the world over. Today, the Rainbow Cleaning System is sold and enjoyed in many countries around the world. read more