https://investor-dzsi.com/news/dzs-is-the-largest-u-s-based-provider-for-pon-shipments-and-offers-the-widest-selection-of-fttx-access-solutions/

https://www.mk.co.kr/news/stock/view/2019/08/628674/

https://investor-dzsi.com/news/dasan-zhone-solutions-reports-strong-second-quarter-2019-financial-results/

https://www.mk.co.kr/news/stock/view/2019/08/608631/

https://finance.yahoo.com/news/dasan-zhone-dzsi-expected-beat-143002992.html

https://www.mk.co.kr/news/stock/view/2019/08/591893/

https://investor-dzsi.com/news/dzs-selected-by-korea-telecom-for-5g-mobile-solutions/

https://investor-dzsi.com/news/rakuten2019/

http://www.ddaily.co.kr/news/article/?no=183916

http://www.thebell.co.kr/free/content/ArticleView.asp?key=201907230100044750002802&svccode=00&page=1&sort=thebell_check_time