History| 1872 | Founded at Asakusa-kurame in Tokyo to manufacture and sell military bugles. |
|---|---|
| 1907 | Manufacturing of hand-push horns for cars and motorcycles started. |
| 1930 | Manufacturing of Japan’s first electric horns started, adopted to military vehicles. |
| 1934 | Appointed as a cooperative supplier of Nissan Motor Co., Ltd. |
| 1952 | Manufacturing of spiral-type horns and cylinder-type horns started. |
| 1953 | Statistical quality control implemented with guidance from Nissan Motor Co., Ltd. |
| 1972 | Head office newly constructed. Capital increased to 48 million yen. |
| 1973 | Tokamachi Factory newly constructed and put into operation. |
| 1983 | Capital increased to 99.28 million yen. |
| 1984 | Technical Center constructed at Tokamachi Factory. |
| 1990 | 2nd Plant constructed at Tokamachi Factory. Awarded the Creation of Work Comfort Award by the Tokyo Chamber of Commerce and Industry. |
| 1992 | 3rd Plant constructed at Tokamachi Factory. |
| 1993 | Awarded Q-1 Award by Ford. |
| 1998 | Production of Micro ISO relays started. |
| 2002 | Obtained ISO 9001 Certification (Certificate No. JQA-QM9009). |
| 2004 | Obtained ISO 14001 Certification (Certificate No. JQA-EM3992). |
| 2015 | Awarded Nissan Quality Award. |
| 2016 | Awarded the Prize for Creativity by the Minister of Education, Culture, Sports, Science and Technology. |
