Quite the opposite, sponge rubber frequently starts with expandable rubber styles like EPDM or neoprene. The rubber compound is then supplemented by using a chemical blowing agent, which, on heating, decomposes and releases gases. This process brings about the enlargement in the rubber and the formation of the sponge-like composition. https://huameirubberfoam62727.fitnell.com/74602214/not-known-details-about-huamei-rubber-foam