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. The Company established Ceraon Co., Ltd in 2005, where its Zink Oxide technology becomes further sophisticated, and now declares opening up overseas markets by its Zinc Oxide Disks together with Ceraon Co., Ltd.