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1953 |
- "Let's Grow With the TOA Brand."
- Exports to India, TOA's first overseas trade.
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1954 |
- "Three Guarantees" basic management policy established.
- Tokyo Office established.
- EM-202, the world's first electric megaphone, developed.
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1955 |
- Electric megaphones win widespread popularity in Japan's national election.
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1956 |
- First floor of the ferroconcrete head office building under construction.
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1957 |
- Japan's first transistorized megaphone, the ER-57, is developed.
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1958 |
- TOA is recognized by MITI (Japan's Ministry of International Trade and Industry) as a model rationalized factory for small and medium enterprises.
- The second-generation ER-58 transistorized megaphone is released and well received.
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1959 |
- CA-106 and CA-112 transistor amplifiers for automobiles developed.
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