The special latex for tanning usually refers to the water dispersion system of the rubber particles as the latex; the water dispersion system for the resin particles is called the emulsion. Can be directly used for surface coating, manufacturing films and adhesives, etc., can be processed into raw rubber, latex products (such as sponges, gloves, balloons, condoms, medical hose, etc.), widely used in daily life. Can be divided into natural latex, latex composition and artificial latex three categories. Generally, after the emulsion polymerization, a composition latex with a solid content of 20% to 30% (such as polybutadiene latex, styrene-butadiene latex, etc.) can be obtained. In order to achieve a solids content of 40% to 70%, the rubber particles are mainly agglomerated into larger particles, that is, in the industry, the methods of adjusting the polymerization formula, adding agglomeration agent, mixing, pressurizing, freezing, and the like are the most important choices. Latex also has waterproof latex, natural latex and leather latex.