SLT is a comprehensive company focused on silica fume industry, relying on the institute of environmental science and engineering, Sichuan University.And we mainly specialize in R&D, investment, production, as well as sales of silica fume.Until now we have built 8 production bases with professional laboratory and experienced engineers. The annual output of the silica fume amounts to more than 40000 tons.Moreover, we have already built 7 large warehouses around China, and with a mature logistics management system, we can deliver the silica fume on time. Our goal is to provide proper and qualified silica fume to all our customers, we have very strict quality control system to ensure all SLT Silica fumes can meet the Standard of ASTM C1240.