As an indispensable product in textiles, the human-made leather industry has undergone several years of development, and has made great progress in terms of hand feel, luster, color, simulation effect, and so on. In terms of exploration, the existing solvent-free and water-based PU leathers have gradually entered the market, and after that, there are also renewable human-made leathers and biological-based human-made leathers, making certain contributions to green, environmental protection, and environmental protection.