Designed for perfection, built with precision; Sankosha's products are sure to impress. Backed by a sterling warranty our equipment will give you years of trouble-free performance. Please browse through our product line to see how we can best suit your needs. SANKOSHA CORPORATION manufactures ceramic arrester (gas tube arrester) and solid-state surge protection device. The Company also provides lightning surge protection for telecommunication, data lines, and power supply and engineering services.