| Revenue | 31/12/2018 | 31/12/2017 | 31/12/2016 | 31/12/2015 |
| Total revenue | 982,479 | 863,717 | 779,839 | 709,868 |
| Cost of revenue | 632,730 | 564,634 | 478,555 | 431,182 |
| Gross profit | 349,749 | 299,083 | 301,284 | 278,686 |
| Operating expenses |
| Research development | 40,582 | 41,174 | 40,306 | 44,753 |
| Selling general and administrative | 159,472 | 165,467 | 160,714 | 146,192 |
| Non-recurring | - | - | - | - |
| Others | - | - | - | - |
| Total operating expenses | 832,784 | 771,275 | 679,575 | 622,127 |
| Operating income or loss | 149,695 | 92,442 | 100,264 | 87,741 |
| Income from continuing operations |
| Total other income/expenses net | -34,448 | -37,734 | -21,998 | -36,263 |
| Earnings before interest and taxes | 149,695 | 92,442 | 100,264 | 87,741 |
| Interest expense | -20,242 | -18,602 | -15,541 | -11,841 |
| Income before tax | 115,247 | 54,708 | 78,266 | 51,478 |
| Income tax expense | 32,228 | 22,123 | 25,454 | -5,787 |
| Minority interest | 3,031 | 3,247 | 3,767 | 3,690 |
| Net income from continuing ops | 83,019 | 32,585 | 52,812 | 57,265 |
| Non-recurring events |
| Discontinued operations | - | - | - | - |
| Extraordinary items | - | - | - | - |
| Effect of accounting changes | - | - | - | - |
| Other items | - | - | - | - |
| Net income |
| Net income | 82,891 | 33,111 | 52,733 | 57,279 |
| Preferred stock and other adjustments | - | - | - | - |
| Net income applicable to common shares | 82,891 | 33,111 | 52,733 | 57,279 |