Color knitted denim fabrics can be produced in various colors according to different formulas, which completely solves the problem of the single color of knitted denim fabrics. The color knitted denim yarn is dyed from the outside to the inside. The cotton core is white. It has pullability. The more washing times, the more layering and patina effect. This is the most essential difference from ordinary denim fabrics. Many factories use ordinary dyeing methods to imitate, but they can only implement simple water washing. Once rinsing, there will be a discoloration reaction, and the effect is very unsatisfactory.