Ethylene vinyl acetate copolymer (EVA) is obtained by copolymerization of ethylene and vinyl acetate in different proportions. E in the English abbreviation EVA stands for ethylene component, and VA stands for vinyl acetate component. Its performance is closely related to the content of vinyl acetate (VA). According to the different VA content, it can be divided into three categories: EVA plastic with VA content of 5% - 40%, which is mainly used for polyethylene modification Manufacturing wires and cables, film poles, other molded products and mixtures, etc; VA content of 40% - 90% is called EVA rubber, which is mainly used for rubber, cable and automotive industrial parts; VA content above 90% is called polyvinyl acetate emulsion, which is mainly used for adhesives and coatings.