Announcement of the Interim Shareholders' Meeting
I wish you good health and peace in the house.

We are holding an extraordinary shareholders' meeting as follows in accordance with commercial law and the articles of association, so please attend.

1. Daytime: June 8, 2020 (Monday) 9 a.m.

2. Jang So: Cherry Blossom Road No. 234, 403, Cumbersteak Competition Room, Geumcheon-gu, Seoul

3. Base date: May 14, 2020 (Thursday)
(Shutdown period 2020.05.15. - 2020.05.19)

4. Purpose of Temporary Shareholders' Meeting
1) Sub-proposal
Proposition 1: Appointment of outside directors

Name (birth date)	Recommended person	Major medicinal power	with the company Transaction details	with the largest shareholder Relationship
Jung Woo Chul (79.04.07)	board of directors	KAIST Department of New Material Engineering an associate professor	None	None

5. Sub-reference documents
1) Attendance by himself: Attendance to the extraordinary shareholders' meeting, identification card, and documents proving he is a shareholder.
2) Attendance of an agent: a letter of attendance at the extraordinary shareholders' general meeting, a letter of attorney, an identification card of an agent, a copy of the certificate of a stockholder's seal or identification card, and documents proving that he is a shareholder.

29 April 2020

combustech Co., Ltd.
CEO Lee Don-won (Direct Life Strategy)