Ref. No. 1908/028EN June 13, 2019 Subject Management Discussion and Analysis for Q2/2019 (Ending June 30, 2019) To Director and Manager of the Stock Exchange of Thailand Ubis (Asia) Public Company

Stock Exchange of Thailand The Board of Director’s meeting No. 4/2018 of General Engineering Public Company Limited (“the Company”) held on 15 May 2018 has approved and verified the financial statements

(Translation) Ref: EIC-AD012/2020 14 May 2020 Subject: Management Discussion and Analysis for the Performance for the three-month period ended 31 March 2020 To: President The Stock Exchange of Thailand The Board

10.59% QoQ resulting from improving in production capability, efficiency and fuel management. • Cost to revenue from sale of industrial equipment ratio in Q1-2020 decreased by 13.56% QoQ resulting from

1 June 30, 2020 Subjects : The acquisition of ordinary shares of APEX Energy Co., Ltd. increased 18.75% Attention : The Director and Manager of the Stock Exchange of Thailand Eastern Power Group

palm production and stock, EPPO P2F was also increased due to higher of Methanol price. Global Green Chemicals Public Company Limited Management’s Discussion and Analysis | 5 Fatty Alcohols Exhibit 4

Limited To: Director and Manager The Stock Exchange of Thailand As the Board of Directors Meeting of Wiik & Hoeglund Public Company Limited ("the Company") No. 5/2018 on October 12, 2018, approved Wiik

Profit 142 55 251 76% 359% 937 521 -44% EPS (Baht/Share) 0.19 0.05 0.24 27% 359% 1.27 0.56 -56% Stock Gain/(Loss) & NRV 49 -143 -62 -227% -57% 356 -664 -286% Adjusted EBITDA (1) 224 354 449 101% 27% 1,104

March 31, 2018 THB 0.32 per share 2 weighted average price of the Company’s shares on the Stock Exchange of Thailand at least for the previous 15 consecutive business days prior to the date the Board of

CPO cannot separated, the production costs are still volatile according to the price of the raw material during the changed period. As of March 31st, 2020, the Company has realized its stock loss of