| Revenue | 31/12/2018 | 31/12/2017 | 31/12/2016 | 31/12/2015 |
| Total revenue | 333,325.488 | 302,963.465 | 228,526.857 | 231,441.105 |
| Cost of revenue | 272,810.484 | 241,512.886 | 176,784.128 | 182,557.169 |
| Gross profit | 60,515.004 | 61,450.579 | 51,742.729 | 48,883.936 |
| Operating expenses |
| Research development | - | - | - | - |
| Selling general and administrative | 34,806.117 | 33,017.952 | 30,218.301 | 30,489.16 |
| Non-recurring | - | - | - | - |
| Others | -1,551.556 | -624.55 | -667.717 | 540.45 |
| Total operating expenses | 306,065.045 | 273,906.288 | 206,406.135 | 213,599.85 |
| Operating income or loss | 27,260.443 | 29,057.177 | 22,120.722 | 17,841.255 |
| Income from continuing operations |
| Total other income/expenses net | -1,347.392 | -1,580.735 | -665.414 | -614.041 |
| Earnings before interest and taxes | 27,260.443 | 29,057.177 | 22,120.722 | 17,841.255 |
| Interest expense | -1,488.9 | -1,091.512 | -921.575 | -1,578.759 |
| Income before tax | 25,913.051 | 27,476.442 | 21,455.308 | 17,227.214 |
| Income tax expense | 4,783.588 | 4,827.389 | 5,481.058 | 4,029.847 |
| Minority interest | 10,128.324 | 8,869.285 | 6,909.222 | 6,153.843 |
| Net income from continuing ops | 21,129.463 | 22,649.053 | 15,974.25 | 13,197.367 |
| Non-recurring events |
| Discontinued operations | - | - | - | - |
| Extraordinary items | - | - | - | - |
| Effect of accounting changes | - | - | - | - |
| Other items | - | - | - | - |
| Net income |
| Net income | 19,337.618 | 20,348.862 | 14,514.7 | 12,442.243 |
| Preferred stock and other adjustments | - | - | - | - |
| Net income applicable to common shares | 19,337.618 | 20,348.862 | 14,514.7 | 12,442.243 |