Products Specialty silicas Precipitated silica is used in various applications such as rubber, paints, inks and coatings, agriculture, oral care and other industries. Years of research and experience allowed DSI to develop precipitated silica with high dispersive ability and increased surface reactive ability permitting to reduce silane concentrations for tire tread application. Calcium Carbonate nano-fillers We at DSI can tailor PCC to optimize its performance in a specific application. Due to the innovative production process we offer our nano-sized product for use in a wide range of applications. R&D services DSI provides top-notch research and development services to bring quality and cost effective silica and calcium carbonate products to manufacturers worldwide.