Water transfer printing, also called curve coating printing, is a way to do the printing on the surface that is not flat, which overcomes the problem facing offset printing that can not reach the tongued and grooved face and the disadvantage from paying higher expense for the equipment. Due to its high versatility, wide practicality and simple operation, this kind of printing obtains a great popularity. With its high reproducing fidelity, the spurious which have been treated with water transfer printing can even be mixed with the genuine. The printing can be applied to the surface of the materials such as hardware (brass, iron, aluminum, copper, etc.), wood, plastic (ABS, PU, PP, PE, TPR, 4FS, PVC, etc.), stone, bakelite, ceramic, etc. The cost of products that have been applied with water transfer printing is relatively low, while their added value multiplies. Water transfer printing enjoys a fast improvement these days. As most of the markets are still to be exploited, the demand is estimated far beyond the supply.