Hemlock Semiconductor Group – More than 50 years of leadership in polysilicon materials and technology More than a half-century of experience and know-how in the development, production and global commercialization of polycrystalline silicon made Hemlock Semiconductor a committed, reliable and proven supplier for your semiconductor or photovoltaics business. Expertise that has evolved since 1961 gives us an edge in applying our application engineering to helping our customers around the world solve today’s product and process challenges and identify tomorrow’s opportunities. Hemlock Semiconductor Group continues to celebrate and reaffirm our commitment to the safe, sustainable and reliable production of quality high-purity polysilicon for your products.