| Revenue | 12/31/2018 | 12/31/2017 | 12/31/2016 | 12/31/2015 |
| Total Revenue | 1,667,447 | 1,511,203 | 1,378,942 | 1,260,896 |
| Cost of Revenue | 1,133,108 | 980,792 | 786,852 | 705,391 |
| Gross Profit | 534,339 | 530,411 | 592,090 | 555,505 |
| Operating Expenses |
| Research Development | - | - | - | - |
| Selling General and Administrative | 73,514 | 56,675 | 34,629 | 21,349 |
| Non Recurring | - | - | - | - |
| Others | 98,155 | 82,206 | 73,197 | 59,919 |
| Total Operating Expenses | 1,421,628 | 1,234,686 | 998,394 | 884,756 |
| Operating Income or Loss | 245,819 | 276,517 | 380,548 | 376,140 |
| Income from Continuing Operations |
| Total Other Income/Expenses Net | -46,501 | -77,510 | -32,581 | -29,421 |
| Earnings Before Interest and Taxes | 245,819 | 276,517 | 380,548 | 376,140 |
| Interest Expense | -53,762 | -38,990 | -28,836 | -26,510 |
| Income Before Tax | 199,318 | 199,007 | 347,967 | 346,719 |
| Income Tax Expense | 37,516 | 859 | 127,101 | 126,389 |
| Minority Interest | - | - | - | - |
| Net Income From Continuing Ops | 161,802 | 198,148 | 220,866 | 220,330 |
| Non-recurring Events |
| Discontinued Operations | - | - | - | - |
| Extraordinary Items | - | - | - | - |
| Effect Of Accounting Changes | - | - | - | - |
| Other Items | - | - | - | - |
| Net Income |
| Net Income | 161,802 | 198,148 | 220,866 | 220,374 |
| Preferred Stock And Other Adjustments | - | - | - | - |
| Net Income Applicable To Common Shares | 159,696 | 195,183 | 219,108 | 219,413 |