Mr. Titisak Simakulthorn Mr. Titisak Simakulthorn, a former Managing Director, who is responsible for the operation of Kulthorn Kirby Public Company Limited ("KKC"), shall be liable for

Mr. Pichet Sithi-amnuai Between 1 September 2022 and 15 September 2024 Mr. Pichet Sithi-amnuai, as Managing Director of Bualuang Securities Public Company Limited (“BLS”) and the person responsible

Mr. Vorachai Phakdeesanaeha Mr. Worachai Pakdeesaneha, managing director who is responsible for the operation of Vorakit Construction Company Limited ("VKK") shall be liable for VKK's

Mr. Kritchthorn Chindapradist Mr. Kritchthorn Chindapradist, managing director who is responsible for the operation of SAMART TRAFFIC COMPANY LIMITED (“SMT”) shall be liable for SMT's offering

Mr. Anuwat Burapachaisri Mr. Anuwat Burapachaisri, the managing director, who is responsible for the operation of MEC Far East International Public Company Limited (“MEC”), shall be liable for MEC

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ACC1/19-007 February 18, 2019 Subject: Management Discussion and Analysis for the year ended December 31, 2018 To: Director and Managing Director The Stock Exchange of Thailand Qualitech Public

ACC1/20-012 February 25, 2020 Subject: Management Discussion and Analysis for the year ended December 31, 2019 To: Director and Managing Director The Stock Exchange of Thailand Qualitech Public

AC 52/07-003 ACC1/19-019 May 13, 2019 Subject: Management Discussion and Analysis Quarter 1 Ending March 31, 2019 To: Director and Managing Director The Stock Exchange of Thailand Qualitech Public