Earth Tech Environment Public Company Limited 11th November 2020 Subject Management Discussion and Analysis Financial Performance for the quarter ended 30th September 2020 To President The Stock

Diamond Building Products Public Company Limited and its Subsidiary (together referred to as “Corporate Group”) would like to clarify on the operating results according to the consolidated financial

Thailand Diamond Building Products Public Company Limited and its Subsidiary (together referred to as “Corporate Group”) would like to clarify on the operating results according to the consolidated financial

ZIGA INNOVATION PUBLIC COMPANY LIMITED 999/9,10,11 MOO 9 NAIKLONGBANGPLAKOD, PHASUMUDJADEE, SAMUDPRAKARN 10290 Tel. 02-816-9315 Fax. 02-816-9315 #444 NO. ZIGA 010/2019 14 November 2019 Subject

ZIGA INNOVATION PUBLIC COMPANY LIMITED 999/9,10,11 MOO 9 NAIKLONGBANGPLAKOD, PHASUMUDJADEE, SAMUDPRAKARN 10290 Tel. 02-816-9315 Fax. 02-816-9315 #444 NO. ZIGA 007/2019 14 May 2019 Subject: Management

ZIGA INNOVATION PUBLIC COMPANY LIMITED 999/9,10,11 MOO 9 NAIKLONGBANGPLAKOD, PHASUMUDJADEE, SAMUDPRAKARN 10290 Tel. 02-816-9315 Fax. 02-816-9315 #444 NO. ZIGA 009/2019 9 August 2019 Subject

206,307 0% Retained earnings (deficit) Appropriated: Legal reserve 763,977 763,977 0% Unappropriated (25,504,986) (24,899,544) 2% Equity attributable to owners of the Company (433,023) 172,419 (351%) Non

-Translation- 1 Ref. LPN/SorKor/060/2562 14th February 2019 Re: Establishment of a joint-stock company Dear Director and Manager Stock Exchange of Thailand Enclosed: Information on the establishment

major shareholder, the company changed strategy in the business of SSK made SSK earnings improved significantly in the 9 months period of 2017. The gross profit increased 16.72 million baht or 260.44% and

higher earnings from operations. 1.9 Profit Sharing for non-controlling interest of a subsidiary company On Oct 1’ 2010, the company sold partial investment in a subsidiary company to Japanese alliance