939 2022 5 12 1972 10 2020 4 2022 4 2018 8 2020 4 2018 4 2020 4 2013 12 2018 8 1993 7 1996 7 1977 2 Vistra Corporate Services (HK) Limited 2003 2015 9 2020 1999 6 2003 11 1 3.28 3.28 8.17 (i) (ii) 3.28 3.28 2022 5 12 M C 2