Chuzhou Prosperity Environmental Protection Color Fiber Co., Ltd. Is a sino-foreign joint venture, and focuses on the production of differential polyester staple fiber and the development of new materials, new products, new technology. It developed the new technology of "melt direct spinning and on-line adding masterbatch" with China Textile Academy. It is the first, and one of the biggest enterprise produces the differential polyester fiber with melt direct spinning technology currently in the domestic. This new technology abandoned the traditional printing and dyeing process from raw material to the finished product, so as to eliminate the influence on the environment of the dyeing and printing process which cause the most serious pollution in the textile industry chain. It is a technological revolution and environmental innovation in textile industry, and fully compliance with national sustainable development policy.