Company Profile
| Company name | DIA OPTICAL CO. |
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| Founded | January, 1958 |
| Location | 4-2-2, Shorinji-cho Nishi, Sakai-ku, SAKAI, OSAKA, 590-0960 JAPAN |
| P.O.Box46, SAKAI, OSAKA, 590-8691 JAPAN | |
| URL | http://www.dia-optical.com/ |
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Company Profile
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