Synthetic quartz preform is one of the product groups of Shin-Etsu Chemical that specializes in silicon chemical business. It is a rod based on synthetic quartz of high purity. The inner structure is designed so precisely that any incident light passes through without attenuation. Shin-Etsu Chemical has built a new factory in Kashima, Ibaraki Prefecture, which started operation in October 2001. The production capacity has since doubled, further establishing a system of stable supply.

* The high-level and complex production process is backed by highly reliable quality control and computer technology, ensuring a stable and high quality.
* We were the first company to produce large-size preforms, and established mass production technology for preforms 160mmφ in diameter ×1,500 mm in length.