Insulating rubber sheets, also known as RUBBER SHEET, are insulating materials primarily made from rubber. They mainly use NR, SBR, and other insulating rubbers as raw materials, with some products containing三元乙丙橡胶 (EPDM), cis-1,4-polybutadiene, and other components. These sheets are manufactured through processes such as intensive mixing, open mixing, and vulcanization. [3] [5]