OTOWA Electric Co., Ltd. is the Japanese top manufacturer specializing Lightning Protection related products. Since its establishment in 1946, the Company has been concentrating in development of such products by its state-of-art testing and research laboratory. The core technology of the Company's lightning protection products is its Zinc Oxide Disks. This technology was originally developed in Japan and the Company has adopted, and further improved this unique Japanese know-how to supply very best lightning protection products, such as SPD (Surge Protection Device) for several applications, home arresters, high voltage arresters, and other lightning protection rerated products.