Rankings of the Top 10 competitiveness enterprises in the optical communications industry of China in 2024 (18th)" | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017| 2016| 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007