| Revenue | 12/31/2018 | 12/31/2017 | 12/31/2016 | 12/31/2015 |
| Total Revenue | 2,182,879 | 1,787,922 | 1,634,340 | 1,580,519 |
| Cost of Revenue | 1,736,600 | 1,421,641 | 1,290,331 | 1,262,390 |
| Gross Profit | 446,279 | 366,281 | 344,009 | 318,129 |
| Operating Expenses |
| Research Development | - | - | - | - |
| Selling General and Administrative | 276,886 | 248,786 | 235,001 | 222,068 |
| Non Recurring | - | - | - | - |
| Others | - | - | - | - |
| Total Operating Expenses | 2,033,586 | 1,687,827 | 1,533,532 | 1,491,355 |
| Operating Income or Loss | 149,293 | 100,095 | 100,808 | 89,164 |
| Income from Continuing Operations |
| Total Other Income/Expenses Net | -617 | 843 | 253 | -500 |
| Earnings Before Interest and Taxes | 149,293 | 100,095 | 100,808 | 89,164 |
| Interest Expense | -3,710 | -3,156 | -2,345 | -1,753 |
| Income Before Tax | 148,676 | 100,938 | 101,061 | 88,664 |
| Income Tax Expense | 35,773 | 45,666 | 36,165 | 31,224 |
| Minority Interest | - | - | - | 18,284 |
| Net Income From Continuing Ops | 112,903 | 55,272 | 64,896 | 57,440 |
| Non-recurring Events |
| Discontinued Operations | - | - | - | - |
| Extraordinary Items | - | - | - | - |
| Effect Of Accounting Changes | - | - | - | - |
| Other Items | - | - | - | - |
| Net Income |
| Net Income | 112,903 | 55,272 | 64,896 | 49,364 |
| Preferred Stock And Other Adjustments | - | - | - | - |
| Net Income Applicable To Common Shares | 112,903 | 55,272 | 64,896 | 49,364 |