SINOSI GROUP Who we are The SINOSI GROUP CORPORATION (SINOSI) is a professional and leading producer and trader of silica and silicon materials (silicon dioxide, silicon oxygen, pure silicon) and related products which including quartz, crystal, amorphous silica, hydrated silica, fused silica, ferro silicon, silicon metal, mono and polycrystalline silicon and so on. Meanwhile, we also offer the machinery, equipments, instruments and related service in this silica and silicon industry field. Backed by the former Ministry of Geology & Mineral Resources of P. R. China and sharing the most state of the art lab facilities and research resources of the Chinese Academy of Geological Sciences enabled the SINOSI a first class company in producing quality silica and silicon materials and related products as well as one of the most reliable trade company in the world. What we offer SINOSI and her branch companies, such as Sino Surplus International Ltd., Sino Silica Beijing Co., Ltd. and Sinosi Sci-Tech Beijing Co., Ltd. and so on, have been developed and merchandised various materials and products in mainly 30 categories, more than 500 types of silica and silicon materials and related products in China, SINOSI users now spread over 50 more countries and areas in the world wide market. The 99.9995% purity silica sands, 99.9%â??s nanometer and micro silica powder and 95% spherical ratio fused silica powder which SINOSI developed are the top products in the world wide silica industry, and it has been the state-of-art milestone in this silica producing field. SINOSI is also one professional supplier for the machinery, equipments, instruments and related technical service for the silica and silicon production in the world wide market. SINOSI is challenging the highest peak of worldâ??s technology with his top performance in the silica and silicon industry and business field.