EVA is ethylene vinyl acetate, which belongs to polar material. Disadvantages: water vapor is easy to penetrate, and hydrolysis is easy to produce acetic acid. Advantages: cheap and mature technology.
POE is an ethylene-octene copolymer, which belongs to nonpolar materials. Disadvantages: raw materials are heavily monopolized (raw materials are expensive, people like to buy or not), and nonpolar substances are difficult to react with crosslinking agents. High technical requirements. Advantages: low water permeability, good PID resistance and high resistance.