Solution polymerized styrene-butadiene rubber, such as adding a small amount of spherical silica (instead of carbon black) as a reinforcing agent and anti-aging agent, to produce color rubber toughness, strength, elongation, fracture resistance and anti-aging properties meet or exceed the EPDM rubber. Spherical nano-silica as a versatile active ingredient, can be tailored for different industries. Xinlei spherical nano-silica powder will make the most of our clients greatly benefit from, with many targeted silica products, but also according to customer's need to provide unique and innovative products and provide technical services.