Water-based PU is a second upgrade on the basis of the dry process, it uses the combination of water-based surface layer process and solvent-free foam bonding layer process, on the one hand to make up for the limitations of using one of the processes alone, on the other hand, it can maximize the advantages between the two. In addition, the water-based PU adopts the three-dimensional reduction process, the leather surface is processed by embossing, and the texture is restored to the real natural leather texture, which makes the leather more three-dimensional and layered, and the tactile experience is constantly strengthened and upgraded, the leather surface is elastic, comfortable and ventilated, warm in winter and cool in summer, and more skin-friendly!