We are developing the newly EPDM closed-cell material which has low VOC and low odor. With a density of 75 kg/m3, it is ultra-light, super soft, and has excellent elasticity. Its surface is flat, smooth, and free of wrinkles, and it has a good Q elasticity. It can be compressed to a large extent, making it an excellent soft material for waterproof sealing. It is also convenient for assembly.