Nunotani Keiki Co., Ltd. Osaka Nunotani Seiki Co., Ltd. Nippon Electric Instrument, Inc. NZK Co., Ltd. Koshin Denki Kogyo Co., Ltd. Japan Radio Co.,Ltd. Furuno Electric Co.,Ltd. OMRON FUJI ELECTRIC MITSUBISHI ELECTRIC MATSUSHITA(PANASONIC) Ibuki Kog]o Co.,Ltd. Sanko Electric Co.,Ltd.