Sunpolymer Plans New Silicone Sponge Sheet Factory to Target EV, Aerospace Industries on April 24, 2018 in Products Sunpolymer Corp., a manufacturer and seller of extruded silicone rubber, high-performance sponge sheet and molded products, is planning to build…... Membership Required You must be a member to access this content.View Membership LevelsAlready a member? Log in here Continue Reading