The Board of Quantum Thinking Limited announced that Mr. Cai Dan has been appointed as an executive Director and chief technology officer of the company with effect from 1 March 2021. Mr. Cai, aged 43, has been the chief technology officer and a director of Shenzhen CITIC Cyber Security Authentication Co. Ltd. an indirect non-wholly owned subsidiary of the company, since October 2017 and January 2021 respectively.