. Disclose key financial ratio - net debt to EBITDA ratio - interest coverage ratio - debt service coverage ratio - debt to equity ratio - current ratio - bill of exchange size to interest bearing debt ratio

Microsoft Word - 5. TKS - SET Announcement (BOD) (EN) - final (first amendment with allocation ratio).docx 1 (-Translation-) Ref. IR 60/011 December 12, 2017 Subject: Reduction of the Registered

Period Day 96 76 62 5.Sales Inventory Period Day 466 272 233 6.Fixed Asset Turnover Times 1.98 2.01 2.20 7.Asset Turnover Times 0.40 0.58 0.84 8.Debt to Equity Ratio Times 0.11 0.15 0.43 9.Gross Profit

.Asset Turnover Times 0.49 0.40 0.58 8.Debt to Equity Ratio Times 0.10 0.11 0.15 9.Gross Profit Ratio % 34.6 35.2 37.9 10.Net Profit Ratio % 13.2 24.0 13.6 11.Return On Asset % 6.5 9.7 7.9 12.Return On

Business Manufacture and trade steel bars and finished steel products Relationship with the Company Business Partners Debt amount * 231.89 million Baht Debt to Sales ratio** 7.21% Provision for allowance for

660 466 6.Fixed Asset Turnover Times 2.5 2.7 1.98 7.Asset Turnover Times 0.46 0.49 0.40 8.Debt to Equity Ratio Times 0.08 0.10 0.11 9.Gross Profit Ratio % 34.3 34.6 35.2 10.Net Profit Ratio % 11.2 13.2

Description Unit 2017 2016 2015 1. Liquidity ratio Time 7.59 8.29 1.58 2. Liquidity quick ratio Time 3.13 4.36 0.50 3. Average debt collection time Day 69 57 40 4. Average debt repayment time Day 71 64 63 5

of steel Relationship with the Company Business Partners Debt amount * 252.08 million Baht Debt to Sales ratio** 7.33% Provision for allowance for doubtful accounts 100% of outstanding balance due to

the 1st quarter ended 31 March Description Unit 2018 2017 2016 1. Liquidity ratio Time 9.48 6.69 9.48 2. Liquidity quick ratio Time 1.47 3.26 6.16 3. Average debt collection time Day 53 62 45 4. Average

ratio Time 1.85 1.47 3.26 3. Average debt collection time Day 51 53 62 4. Average debt repayment time Day 81 96 131 5. Average goods selling time Day 726 859 495 6. Fixed asset turnover ratio Time 0.67