Management Name : Mrs MONRUDEE GETTUPHAN | Type of securities : Common share | Methods of Acquisition / Disposition : Sell | Transaction Date : 22/02/2017

Management Name : Mr SARAWUT BENJAKUL | Type of securities : Common share | Methods of Acquisition / Disposition : Buy | Transaction Date : 15/02/2017

Management Name : Mr SARAWUT BENJAKUL | Type of securities : Common share | Methods of Acquisition / Disposition : Buy | Transaction Date : 09/02/2018

Management Name : Mr SARAWUT BENJAKUL | Type of securities : Common share | Methods of Acquisition / Disposition : Buy | Transaction Date : 22/02/2018

Management Name : Mr SARAWUT BENJAKUL | Type of securities : Common share | Methods of Acquisition / Disposition : Buy | Transaction Date : 27/06/2018

Management Name : Mr SARAWUT BENJAKUL | Type of securities : Common share | Methods of Acquisition / Disposition : Buy | Transaction Date : 17/07/2018

companies certified by CAC. 4  The Stock Exchange of Thailand : the record of listed companies with corporate sustainable development "Thai sustainability Investment 2022" included: SET and mai listed

LIMITED   Reset UNIQUE ENGINEERING AND CONSTRUCTION PUBLIC COMPANY LIMITED Sustainability Development Ranking CG Score 1/ CG Score AGM Level 2/ AGM Score Thai-CAC 3/ Thai CAC  3/ n/a Thailand Sustainability

Offeror : THAI INDUSTRIAL GASES PLC. | Date of submission of the Statement of Intention : 30/05/2002

Offeror : THAI INDUSTRIAL GASES PLC. | Date of submission of the Statement of Intention : 29/08/2002