Synthetic leather is generally divided into: The first is PVC (polyvinyl chloride), which burns to produce water, carbon dioxide, chlorinated compounds, and even chlorine gas; It is a mixture of polyvinyl chloride resin, plasticizer and other matching agents, coated or glued to the fabric, after a certain processing process and made of wake up products. In addition, there are double sided PVC artificial leather with plastic layers on both sides of the substrate.   The second is PE (polyethylene), which, when fully burned, theoretically produces only water and carbon dioxide. The third, and most common, is PU leather, which, when fully burned, produces water, carbon dioxide, nitrogen, and small amounts of nitrogen-containing compounds. Polyurethane artificial leather is divided into dry polyurethane artificial leather and wet polyurethane artificial leather. The so-called dry polyurethane artificial leather refers to the solvent based polyurethane resin solution volatilized off the solvent, the multilayer film and the substrate formed by the multilayer structure. The wet polyurethane artificial leather is a multi-layer structure with good air permeability and moisture permeability, and a continuous porous layer, which is made of solvent-based polyurethane resin and water film forming method.   Artificial leather can be divided into many types because of the different synthetic resin used in artificial leather, different types of base materials, different production methods, whether there is foaming and different uses. Now artificial leather by the use of synthetic resin, production technology and use of classification.

The distinction between PU and PVC is still relatively easy. Judging from the corners, PU base cloth is much thicker than PVC, and the hand feel is different; PU has a softer hand feel, while PVC is harder; it can also be burned with fire, and PU has a much lighter smell than PVC. It can be distinguished by the method of soaking in gasoline: use a small piece of fabric, put it in gasoline for half an hour, and then take it out. If it is PVC artificial leather, it will be hard and brittle; if it is PU synthetic leather, it will not be hard and brittle. There are also some differences in the range of applications of the two materials. In footwear, PVC leather is mainly used for linings or non-load-bearing parts, or in the manufacture of children's shoes. PU leather can be used for footwear fabrics or load-bearing parts. For luggage, PVC leather is used more. This is because the items in the bag, unlike the feet worn by the shoes, do not radiate heat and do not carry personal weight.

PU leather, is ordinary PU leather, polyurethane surface layer plus non-woven fabric or textile fabric, general performance and relatively low price. Microfiber leather, is microfiber PU synthetic leather, high performance polyurethane surface layer is attached to microfiber base cloth, with superior performance, especially wear and scratch resistance.       Microfiber leather and ordinary PU are products under different development stages and different technology levels on behalf of synthetic leather, so they have certain mutual substitution effect. It is believed that as microfiber leather is recognized by more and more people, it will be more widely used in all aspects of human life.