Bi-Functional: Sinofix reactive dyes contain a vinyl sulphone and amino chlorotriazine group. Sinofix reactive dyes have very low sensitivity to the fluctuation of the following dyeing parameters: liquor ratio, dyeing temperature, salt, alkali and dyeing time; excellent reproducibility and high solubility, easy to be dissolved. Sinofix reactive dyes have medium substantivity, good wash-off. This series of dyes can apply to exhaust process for piece, package yarn, hank, jig dyeing and continuous process.