OPTONexpo 8 – 9 April, 2015 · Warsaw View Larger Image ELAS will participate in OPTON expo 2015 – 3rd International Fair for Optoelectronics and Photonics Find us: Hall 4, Booth No. 17 More info about the Opton expo. We are looking forward to meet you! admin_lina2019-05-27T08:51:20+00:00April 9th, 2015|Expo News|Comments Off on OPTONexpo 8 – 9 April, 2015 · Warsaw