| 2011-03-24 | Alternative telephone number | |
|---|---|---|
| 2011-03-16 | Earthquake in Eastern Japan and OPTNICS's operation | |
| 2010-12-01 | Stealth sieve and sieving machine made a article page on Nikkei newspapers | |
| 2010-11-12 | Exhibit innovative sieve products at POWTEX TOKYO 2010 | |
| 2010-05-01 | Exhibited at Cosmetic Beauty Expo in Seoul COEX during 6-May - 9-May. | |
| 2010-05-01 | New Home Page was released. |