It works. Resin, also known as film forming agent, is the main component of finishing agent (color paste), usually natural or synthetic polymer. The main function of film-forming agent is to form a uniform and transparent film on the leather surface. Resin can be divided into acrylic acid and polyurethane according to chemical composition, and oily and water-based according to different media. In tanning process, resin is used for coating, which can be divided into primer coating resin, intermediate coating resin and topcoat coating resin according to different coatings.