Key financial ratios | 4Q 17/18 | 3Q 17/18 | 2Q 17/18 | 1Q 17/18 | 4Q 16/17 |

Profitability ratios |
|||||

Gross operating profit margin (%) | 46.2% | 31.8% | 50.9% | 41.1% | 44.7% |

Operating EBITDA margin (%) | 32.3% | 23.5% | 34.4% | 29.5% | 29.1% |

Recurring net profit margin (%) | 19.6% | 17.1% | 13.4% | 12.0% | 8.4% |

Net profit margin (%) | 41.1% | 16.3% | 23.8% | 13.5% | 12.3% |

ROA (%) | 4.5% | 2.7% | 2.5% | 2.4% | 2.8% |

ROE (%) | 10.3% | 5.7% | 4.7% | 4.3% | 4.9% |

Liquidity Ratio |
|||||

Current Ratio (times) | 0.93x | 1.13x | 0.91x | 1.39x | 1.43x |

Leverage |
|||||

Interest bearing debt to equity (times) | 1.02x | 1.07x | 0.97x | 0.92x | 0.85x |

Adjusted net debt^{1} to equity (times) |
0.37x | 0.34x | 0.30x | 0.10x | 0.13x |

Adjusted net debt^{1} to recurring operating EBITDA (times) |
3.02x | 3.98x | 4.05x | 1.43x | 2.07x |

Interest coverage (times) | 3.31x | 3.66x | 2.75x | 3.12x | 0.57x |

Per share ratios ^{2} |
|||||

Earnings per share (THB) | 0.21 | 0.08 | 0.06 | 0.03 | 0.04 |

Book value per share (THB) | 3.91 | 3.92 | 3.88 | 3.99 | 3.82 |

^{1}^{(*)} Adjusted net debt: calculated based on interest bearing debt - cash and cash equivalent and liquid investment

^{2} per share ratios, calculated based on numbers of shares with par value at THB 4 per share

Key financial ratios | 2017/18 | 2016/17 | 2015/16 | 2014/15 ^{+} |
2013/14 ^{+} |

Profitability ratios |
|||||

Gross operating profit margin (%) | 41.0% | 51.9% | 60.4% | 55.5% | 51.4% |

Operating EBITDA margin (%) | 29.0% | 34.0% | 42.9% | 39.9% | 36.3% |

Recurring net profit margin (%) | 16.0% | 15.4% | 29.2% | 28.2% | 16.4% |

Net profit margin (%) | 24.6% | 20.1% | 41.9% | 32.6% | 52.3% |

ROA (%) | 4.5% | 2.8% | 6.6% | 5.0% | 17.6% |

ROE (%) | 10.3% | 4.9% | 8.9% | 6.4% | 22.7% |

Liquidity Ratio |
|||||

Current Ratio (times) | 0.93x | 1.38x | 0.81x | 3.83x | 4.36x |

Leverage |
|||||

Interest bearing debt to equity (times) | 1.02x | 0.85x | 0.20x | 0.09x | 0.11x |

Adjusted net debt^{1} to equity (times) |
0.37x | 0.13x | 0.15x | (0.11)x | (0.03)x |

Adjusted net debt^{1} to operating EBITDA (times) |
3.02x | 1.72x | 2.57x | (1.96)x | (0.65)x |

Interest coverage (times) | 3.31x | 4.55x | 9.30x | 8.68x | 4.94x |

Per share ratios ^{2} |
|||||

Earnings per share (THB) | 0.37 | 0.17 | 0.35 | 0.25 | 1.08 |

Book value per share (THB) | 3.91 | 3.82 | 3.96 | 4.38 | 5.09 |

^{1}^{(*)} Adjusted net debt: calculated based on interest bearing debt - cash and cash equivalent and liquid investment

^{2} per share ratios, calculated based on numbers of shares with par value at THB 4 per share