Transfer printing is a surface treatment technology that applies complex patterns, multi-color designs, and realistic wood grain or stone textures to product surfaces by transferring designs printed on a film. Representative processing methods include water transfer printing, thermal transfer printing, and in-mold transfer (IMR). Water transfer printing uses water pressure to apply designs to three-dimensional objects and curved surfaces, while thermal transfer printing transfers ink using heat and pressure. IMR achieves high durability and productivity by performing the transfer simultaneously with molding. It is widely adopted in fields that demand high design quality and added value for products, such as automotive interior parts, home appliances, building materials, and daily necessities, contributing to the improvement of product appearance quality.