fixed cost from rental expense and administrative expense. However the 1st Consolidated Separate Amount Change Amount Change Q1.2019 Q1.2018 Amount % Q1.2019 Q1.2018 Amount % Revenue from sale – net

Q3-2022 Balance by Quarter Change Topic Q3-22 Q2-22 Q3-21 Q3-22 VS Q2-22 Q3-22 VS Q3-21 (Million Baht: MB) (MB) % (MB) % Total revenue 1,886.5 1,711.8 1,509.1 174.7 10.2 377.4 25.0 Total operating

year 2016 ECF Holdings Company Limited, as the subsidiary of the Company by holding 75 percent of total shares, invested to solar power plant with installation capacity 1.5 MW at Himeji Prefecture, Japan

Company Limited (ECF-P) and ECF-P is the subsidiary held Consolidated Separate Amount Change Amount Change 2018 2017 Amount % 2018 2017 Amount % Revenue from sale – net 1,454.57 1,444.62 9.94 0.69% 1,443.43

–2021 Balance by Quarter Change Q2–21 Q1–21 Q2–20 Q2–21 VS Q1–21 Q2–21 VS Q2–20 (Million Baht: MB) (MB) % (MB) % Total revenue 2,081.2 1,824.2 1,187.6 257.0 14.1 893.6 75.2 Total operating expenses

School Name: สารสาสน์วิเทศศึกษา (Translation) Re: BOD.SET 003/2562 February 26, 2019 Subject: Clarification on the Change in operating results for the twelve month ended December 31, 2018 over 20

(Translation) Re: BOD.SET 020/2018 November 9, 2018 Subject: Clarification on the Change in operating results for the nine month ended September 30, 2018 over 20% compared with the same period of the

(Translation) Re: BOD.SET 009/2020 May 12, 2020 Subject: Clarification on the Change in operating results for the three month period ended 31 March 2020 over 20% compared with the same period of the

(Translation) Re: BOD.SET 011/2020 August 11, 2020 Subject: Clarification on the Change in operating results for the six-month period ended 30 June 2020 over 20% compared with the same period of the

engaged in distribution of product and equipment, design, assembly and installation, and maintenance service of pure water treatment system; including operate clinical business which Hemodialysis services