●Dyeing does not require any additives, the dyeing wastewater can be directly discharged or recycled, which completely solves the problem of printing and dyeing diving treatment from the source of pollution, and realizes pollution-free dyeing, which is a major breakthrough in cleaner production in the dyeing and finishing industry. ●There is no need for any washing after dyeing, which saves a lot of water and heat energy consumed by the post-washing in the traditional dyeing process. ●Dyeing can be implemented on the traditional high temperature and high pressure dyeing machine, only a little modification is needed, and a dye extraction machine can be installed, which is easy to master and popularize and apply. ●Dyeing quality indicators such as levelness and color fastness meet or surpass the traditional dyeing process