ที่ - Translation - PorBor. 029 / 2018 August 14, 2018 Subject: Clarification of operating results change from the same period last year by more than 20% To: President The Stock Exchange of Thailand

terms, the microelectronics divisions sales decreased by 1%. Sales in Lamphun increased 9% whilst Jiaxing decreased by 26%. The IC divisions sales revenues decreased 16% in Q319, with revenues of the IC

5.49 Million an increase of Baht 43.46 Million or 791.62%. The reasons for such increases are:- - Sale increased from Baht 544.56 Million in Q2/2019 to Baht 613.12 Million in Q2/2020 an increase Baht

operating results change from the same period last year by more than 20% To: President The Stock Exchange of Thailand Rich Asia Corporation Public Company Limited and subsidiaries would like to clarify the

information material which might affect to negative change in the price of DCON's share which were the fact that (1) the net profit in financial statements of 2016 significantly decreases because of

affect to negative change in the price of DCON's share which was the fact that (1) the net profit in financial statements of 2016 significantly decreases because of decreased revenue and increased

quarters of 2019, while on the downside we experience increased competitive pressure on our markets. This we plan to overcome with our efficient fixed cost base and continued focus on quality while widening

28.5 Mn. 2 Zen Corporation Group Public Company Limited 662 Soi Onnuch 17, Suanluang, Bangkok 10250 THAILAND. Tel: 02-0195000 Performance Statement of comprehensive income 1st Quarter 2020 2021 Change

administrative expense was increased from the same period of the year 2019 in an amounting of Baht 5.27 million or 19.21 percent. Due to the Company change the concept to set up Management’s discussion and

and subsidiaries that sells electricity and heat energy has increased income from sales  Revenue from project work of 147.41 Million Baht. The company has 104.41 Million Baht decreased or 41.46 percent