Corporate history
| ■1958 | Opened a plant in Takakura-cho, Miyakojima-ku, Osaka City. |
| ■1962 | Founded Omori Chrome Tokin Co., Ltd. with start-up capital of 3.75 million yen. |
| ■1964 | Increased the capital amount up to 7.5 million yen. |
| ■1967 | Relocated the head office and plant to the current address. Increased the capital amount up to 15 million yen. |
| ■1977 | Acquired an exclusive license for the use of a hard polytetrafluoroethylene (PTFE) plating method in Japan from Interlock Corporation in the U.S. and started plating under the trademark Tfe-Lok. |
| ■1982 | Constructed the head office building and upgraded the plant. Established mirror polishing facilities and totally renewed the plating waste water treatment facilities. |
| ■1985 | Changed the company name to Otec Co., Ltd. |
| ■1986 | Increased the capital amount up to 30 million yen. |
| ■1988 | Succeeded as being the first in the world to commercialize amorphous chrome plating. Started plating under the trademark Chroamor. |
| ■1990 | Constructed Kawada Plant. Founded Otec Kiko Co., Ltd. as a subsidiary for manufacturing and machining rolls and other products. Started roll machining business internally. |
| ■1992 | Started plating business using highly corrosion-resistant chrome plating (trademark: Chroston). |
| ■1997 | Started to machine rolling rolls. |
| ■2002 | Introduced internal diameter buffing machines for internal machining. |
| ■2006 | The company’s management innovation plan approved as a result of its research theme “Development of hard chrome plating from trivalent chromium bath”. |
| ■2007 | Constructed Nakaishikiri Plant in Nakaishikiri-cho, Higashiosaka City. Transferred the mirror finishing division and installed vertical grinding machines at the same time. |
| ■2008 | Totally renewed the drainage system. |
| ■2011 | Installed additional cylindrical grinding machines in Nakaishikiri Plant to strengthen its grinding business. |
| ■2012 | The 50th anniversary of the founding of the company. |