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The high viscosity of silicone rubber products structural sealant and high weathering quality soft sealant are the two most widely used silicone rubber products sealant groups. The first one belongs to medium level modulus sealant products. silicone rubber products Mainly used to cohering the giant glass walls structure of modern construction works; whereas the latter sealant belong to the mid-low modulus level product groups and is primarily used and reliability of silicone rubber products is widely acknowledged in the construction industry. The two types of silicone sealant are belonging to neutral vulcanization system, thus it performs anti-corrosion function to the building material. Also it performs high resistance to the corrosion of rain, snow, ozone and ultraviolet rays.