What is patent PU (printing PU)?

I just make leather goods. Let me answer that. Patent leather Pu (patent leather for short) is the best among the top Pu, and it is the closest material to genuine leather. The main chemical component is polyurethane (the main component of leather). The chemical reaction is complicated and the process is complicated. After the preparation is completed, tiny bubbles can be observed on the cross section by magnification. Because it is a patent, there is no relevant public information, just like Viagra (sildenafil citrate). At present, the French company lollipops S.A owns this technology. At present, there is no formula in China. The raw material (leather) of the products produced by this company is patented Pu leather, and some top-grade leathers are made by French complicated and professional patented manufacturing technology. After the production, the whole piece was imported from France and cut into finished products. Compared with genuine leather, patented PU has the advantages of no killing, no deprivation of life, low price, light weight, good air permeability, strong flexibility and high plasticity. Compared with ordinary Pu, patented Pu has thick and high-grade appearance and good hand feeling. Completely hand-played, hope to adopt, thank you.