On December 17, 2021, the BOD of Rangdong Light Source and Vacuum Flask Joint Stock Company approved the adjustment of the time to implement rights to buy shares in the public offering with details as follows:

-          Record date: December 29, 2021

-          Time for rights transference: from January 06, 2022 to January 24, 2022.

-          Time for subscription and payment: from January 06, 2022 to January 26, 2022.