| Revenue | 12/31/2018 | 12/31/2017 | 12/31/2016 | 12/31/2015 |
| Total Revenue | 1,667,447 | 1,502,671 | 1,361,785 | 1,260,896 |
| Cost of Revenue | 1,120,608 | 980,792 | 786,852 | 705,391 |
| Gross Profit | 546,839 | 521,879 | 574,933 | 555,505 |
| Operating Expenses |
| Research Development | - | - | - | - |
| Selling General and Administrative | 73,514 | 52,711 | 20,527 | 21,349 |
| Non Recurring | - | - | - | - |
| Others | 100,515 | 82,206 | 73,197 | 59,919 |
| Total Operating Expenses | 1,423,988 | 1,230,722 | 984,292 | 884,756 |
| Operating Income or Loss | 243,459 | 271,949 | 377,493 | 376,140 |
| Income from Continuing Operations |
| Total Other Income/Expenses Net | -44,141 | -76,403 | -31,535 | -29,421 |
| Earnings Before Interest and Taxes | 243,459 | 271,949 | 377,493 | 376,140 |
| Interest Expense | -53,762 | -38,990 | -28,836 | -26,510 |
| Income Before Tax | 199,318 | 195,546 | 345,958 | 346,719 |
| Income Tax Expense | 37,516 | 644 | 126,368 | 126,389 |
| Minority Interest | - | - | - | - |
| Net Income From Continuing Ops | 161,802 | 194,902 | 219,590 | 220,330 |
| Non-recurring Events |
| Discontinued Operations | - | - | - | - |
| Extraordinary Items | - | - | - | - |
| Effect Of Accounting Changes | - | - | - | - |
| Other Items | - | - | - | - |
| Net Income |
| Net Income | 161,802 | 194,902 | 219,590 | 220,374 |
| Preferred Stock And Other Adjustments | - | - | - | - |
| Net Income Applicable To Common Shares | 159,696 | 191,985 | 217,842 | 219,413 |