Manager of the Stock Exchange of Thailand For the Q2/2018 period ended of June 30, 2018 (3 months) operating result of the company net loss Baht 4.32 Million comparison with the previous Q2/2017’s net loss

จดหมายชี้แจงq261e August 14, 2018 The Managing Director The Stock Exchange of Thailand Subject : Management Discussion and Analysis for three month Ending 30 June 2018 Summary on Second Quarter

Stock Exchange of Thailand For the Q3/2018 period ended of September 30, 2018 (3 months) operating result of the company net profit Baht 4.79 Million comparison with the previous Q3/2017’s net loss of

จดหมายชี้แจงq361e November 12, 2018 The Managing Director The Stock Exchange of Thailand Subject : Management Discussion and Analysis for three month Ending 30 September 2018 Summary on Third Quarter

writer Ref. No. 158/2562 November 13, 2019 SUBJECT : Management Discussion and Analysis ending September 30, 2019 ATTN : The President Stock Exchange of Thailand The Company realized profit for the

Ref: SP 2020/008 Date : May 14, 2020 Subject : The Explanation to SET concerning the operating result for Q1/2020 more than 20% Attention : The Director and Manager of the Stock Exchange of Thailand

collaboration of capital market partners, business organization and government agencies, i.e. (1) the Stock Exchange of Thailand (SET), (2) the Federation of Thai Capital Market Organizations (FETCO), (3) the

the principles of corporate governance (CG), which has been adopted since 2002 by most IPO companies and listed companies. SEC, therefore, has a plan to issue regulations that an IPO company must

disclosure of information related to digital asset investment via the Electronic Information Transmission System of the Stock Exchange of Thailand (SET), their own company websites and the annual registration

by virtue of their positions to purchase shares of Professional Waste Technology (1999) Public Company Limited (PRO).  The SEC investigation, following a referral from the Stock Exchange of Thailand