26 February 2019 Subject: Management Discussion and Analysis for the Year Ended December 31, 2018 To: Directors and Managers The Stock Exchange of Thailand Halcyon Technology Public Company Limited

DOD BIOTECH PUBLIC COMPANY LIMITED 111 Moo 2 TambonThachin, Amphurmuangsamutsakhon, Samutsakhon 74000 Page 1 of 3 No. DOD026/2563 February 26, 2020 Subject Management Discussion and Analysis of for

effect in 2017 that represented a reduction of about 2% on average and a fire incident on June 18 that caused a backlog of order valued more than USD 2 million by the quarter end. However, consignment

since the end of 2015 and has more tenants gradually. - Others income in Q2/2017 amounted 37.57 million baht was mostly money received from Supreme Court judgement. - Cost of units in condominium projects

-9320 1 Ref: PLC 2017/017 November 16, 2017 Subject: Management Discussion and Analysis Quarter 3 Ended 30-September-2017 (Additional) To: The President of the Stock Exchange of Thailand Panjawattana

26 February 2018 Subject: Management Discussion and Analysis for the Year Ended December 31, 2017 To: Directors and Managers The Stock Exchange of Thailand Halcyon Technology Public Company Limited

15 May 2019 Subject: Management Discussion and Analysis for the 3-Month Period Ended March 31, 2019 To: Directors and Managers The Stock Exchange of Thailand Halcyon Technology Public Company Limited

15 May 2018 Subject: Management Discussion and Analysis for the 3-Month Period Ended March 31, 2018 To: Directors and Managers The Stock Exchange of Thailand Halcyon Technology Public Company Limited

-9320 1 Ref: PLC 2018/012 August 13, 2018 Subject: Management Discussion and Analysis Quarter 2 Ended 30-June-2018 To: The President of the Stock Exchange of Thailand Panjawattana Plastic Public Company

14 November 2018 Subject: Management Discussion and Analysis for the Nine-Month Period Ended September 30, 2018 To: Directors and Managers The Stock Exchange of Thailand Halcyon Technology Public