The company owns professional factory for researching, developing, manufacturing and selling sulfur dyestuff. For years' effort, Jiyou has developed into a professional sulfur dye enterprise owning advanced production technology and management experience. It occupies a leading position in dye market of China. Sulfur black dyes can be divided into: sulfur Black B (green light), BRN (green red light), RN (red light), BN double, BRN double, etc.
