2017. There is a gross loss of 22.78% due to the expected loss estimation from one of the current construction projects. For all other completed projects in 2018 with 10% of gross profit margin still

baht which is the cost from the estimation of accounting that have not yet occurred. 3. Expenses 3.1. The company‘s selling expenses in quarter 2nd of year 2020 were 6.13 million baht decreased 89.27

percent accordingly from the same period of last year, due to lower bonus estimation and asset impairment for door skin machine in year 2016 Financial cost on year 2017 and 4th quarter decreased 42.82 and

53.76 % increased because the associated company had a better earning than previous year. 8. Profit (loss) from Actuarial estimation For year 2018, Company using new Actuarial estimation resulting in

one project affecting a reduction of income of Baht 20.51 million and the estimation of penalty charge of one project expected to be delayed affecting a reduction of income of Baht 2.56 million

. 2. The estimation of welfares for staff of the Company and subsidiary companies increases 32.96 million THB as a result of the new Labor Protection Act announced on 5 April 2019 and enforced 30 days

trade receivables of 2.84 million Baht and other receivables of 0.03 million Baht. Such estimation are based on the Company’s regulations related accounting policy. Details of debtors with estimated

149.54 million or 852.57% increase and equivalent to the gross margin of -11.2 % Gross margin is minus because of both adjustment of estimation of cost of construction and redundancy of expenses in Beung

amount of Baht 164.52 million. This cost of the construction project is still in line with the Company's estimation. For other projects are still normal. 3. The total administrative expense decreases in

reviewed and changed the estimated useful lives of buildings, machinery and equipment in accordance with their conditions and the proper estimation of useful lives with reference to the Health Study Report